diff --git a/TODO.md b/TODO.md
index 3002ac7c..1c754923 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,6 +1,6 @@
 # to-do for 0.6pre1
 
-- finish ExtCh on OPN/OPNA
+- finish ExtCh on OPNA
 - RF5C68 system
 - ZX beeper system overlay percussion
 - ADPCM chips
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index b567803b..5c33d9e4 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -2206,6 +2206,21 @@ void FurnaceGUI::editOptions(bool topMenu) {
   }
 }
 
+void FurnaceGUI::toggleMobileUI(bool enable, bool force) {
+  if (mobileUI!=enable || force) {
+    if (!mobileUI && enable) {
+      ImGui::SaveIniSettingsToDisk(finalLayoutPath);
+    } 
+    mobileUI=enable;
+    if (mobileUI) {
+      ImGui::GetIO().IniFilename=NULL;
+    } else {
+      ImGui::GetIO().IniFilename=finalLayoutPath;
+      ImGui::LoadIniSettingsFromDisk(finalLayoutPath);
+    }
+  }  
+}
+
 int _processEvent(void* instance, SDL_Event* event) {
   return ((FurnaceGUI*)instance)->processEvent(event);
 }
@@ -2711,321 +2726,363 @@ bool FurnaceGUI::loop() {
     curWindow=GUI_WINDOW_NOTHING;
     editOptsVisible=false;
 
-    ImGui::BeginMainMenuBar();
-    if (ImGui::BeginMenu("file")) {
-      if (ImGui::MenuItem("new...")) {
-        if (modified) {
-          showWarning("Unsaved changes! Save changes before creating a new song?",GUI_WARN_NEW);
-        } else {
-          displayNew=true;
+    if (!mobileUI) {
+      ImGui::BeginMainMenuBar();
+      if (ImGui::BeginMenu("file")) {
+        if (ImGui::MenuItem("new...")) {
+          if (modified) {
+            showWarning("Unsaved changes! Save changes before creating a new song?",GUI_WARN_NEW);
+          } else {
+            displayNew=true;
+          }
         }
-      }
-      if (ImGui::MenuItem("open...",BIND_FOR(GUI_ACTION_OPEN))) {
-        if (modified) {
-          showWarning("Unsaved changes! Save changes before opening another file?",GUI_WARN_OPEN);
-        } else {
-          openFileDialog(GUI_FILE_OPEN);
+        if (ImGui::MenuItem("open...",BIND_FOR(GUI_ACTION_OPEN))) {
+          if (modified) {
+            showWarning("Unsaved changes! Save changes before opening another file?",GUI_WARN_OPEN);
+          } else {
+            openFileDialog(GUI_FILE_OPEN);
+          }
         }
-      }
-      ImGui::Separator();
-      if (ImGui::MenuItem("save",BIND_FOR(GUI_ACTION_SAVE))) {
-        if (curFileName=="" || curFileName==backupPath || e->song.version>=0xff00) {
+        ImGui::Separator();
+        if (ImGui::MenuItem("save",BIND_FOR(GUI_ACTION_SAVE))) {
+          if (curFileName=="" || curFileName==backupPath || e->song.version>=0xff00) {
+            openFileDialog(GUI_FILE_SAVE);
+          } else {
+            if (save(curFileName,e->song.isDMF?e->song.version:0)>0) {
+              showError(fmt::sprintf("Error while saving file! (%s)",lastError));
+            }
+          }
+        }
+        if (ImGui::MenuItem("save as...",BIND_FOR(GUI_ACTION_SAVE_AS))) {
           openFileDialog(GUI_FILE_SAVE);
-        } else {
-          if (save(curFileName,e->song.isDMF?e->song.version:0)>0) {
-            showError(fmt::sprintf("Error while saving file! (%s)",lastError));
+        }
+        if (ImGui::MenuItem("save as .dmf (1.0/legacy)...",BIND_FOR(GUI_ACTION_SAVE_AS))) {
+          openFileDialog(GUI_FILE_SAVE_DMF_LEGACY);
+        }
+        ImGui::Separator();
+        if (ImGui::BeginMenu("export audio...")) {
+          if (ImGui::MenuItem("one file")) {
+            openFileDialog(GUI_FILE_EXPORT_AUDIO_ONE);
           }
+          if (ImGui::MenuItem("multiple files (one per system)")) {
+            openFileDialog(GUI_FILE_EXPORT_AUDIO_PER_SYS);
+          }
+          if (ImGui::MenuItem("multiple files (one per channel)")) {
+            openFileDialog(GUI_FILE_EXPORT_AUDIO_PER_CHANNEL);
+          }
+          if (ImGui::InputInt("Loops",&exportLoops,1,2)) {
+            if (exportLoops<0) exportLoops=0;
+          }
+          ImGui::EndMenu();
         }
-      }
-      if (ImGui::MenuItem("save as...",BIND_FOR(GUI_ACTION_SAVE_AS))) {
-        openFileDialog(GUI_FILE_SAVE);
-      }
-      if (ImGui::MenuItem("save as .dmf (1.0/legacy)...",BIND_FOR(GUI_ACTION_SAVE_AS))) {
-        openFileDialog(GUI_FILE_SAVE_DMF_LEGACY);
-      }
-      ImGui::Separator();
-      if (ImGui::BeginMenu("export audio...")) {
-        if (ImGui::MenuItem("one file")) {
-          openFileDialog(GUI_FILE_EXPORT_AUDIO_ONE);
-        }
-        if (ImGui::MenuItem("multiple files (one per system)")) {
-          openFileDialog(GUI_FILE_EXPORT_AUDIO_PER_SYS);
-        }
-        if (ImGui::MenuItem("multiple files (one per channel)")) {
-          openFileDialog(GUI_FILE_EXPORT_AUDIO_PER_CHANNEL);
-        }
-        if (ImGui::InputInt("Loops",&exportLoops,1,2)) {
-          if (exportLoops<0) exportLoops=0;
-        }
-        ImGui::EndMenu();
-      }
-      if (ImGui::BeginMenu("export VGM...")) {
-        ImGui::Text("settings:");
-        if (ImGui::BeginCombo("format version",fmt::sprintf("%d.%.2x",vgmExportVersion>>8,vgmExportVersion&0xff).c_str())) {
-          for (int i=0; i<6; i++) {
-            if (ImGui::Selectable(fmt::sprintf("%d.%.2x",vgmVersions[i]>>8,vgmVersions[i]&0xff).c_str(),vgmExportVersion==vgmVersions[i])) {
-              vgmExportVersion=vgmVersions[i];
+        if (ImGui::BeginMenu("export VGM...")) {
+          ImGui::Text("settings:");
+          if (ImGui::BeginCombo("format version",fmt::sprintf("%d.%.2x",vgmExportVersion>>8,vgmExportVersion&0xff).c_str())) {
+            for (int i=0; i<6; i++) {
+              if (ImGui::Selectable(fmt::sprintf("%d.%.2x",vgmVersions[i]>>8,vgmVersions[i]&0xff).c_str(),vgmExportVersion==vgmVersions[i])) {
+                vgmExportVersion=vgmVersions[i];
+              }
+            }
+            ImGui::EndCombo();
+          }
+          ImGui::Checkbox("loop",&vgmExportLoop);
+          ImGui::Text("systems to export:");
+          bool hasOneAtLeast=false;
+          for (int i=0; i<e->song.systemLen; i++) {
+            int minVersion=e->minVGMVersion(e->song.system[i]);
+            ImGui::BeginDisabled(minVersion>vgmExportVersion || minVersion==0);
+            ImGui::Checkbox(fmt::sprintf("%d. %s##_SYSV%d",i+1,getSystemName(e->song.system[i]),i).c_str(),&willExport[i]);
+            ImGui::EndDisabled();
+            if (minVersion>vgmExportVersion) {
+              if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled)) {
+                ImGui::SetTooltip("this system is only available in VGM %d.%.2x and higher!",minVersion>>8,minVersion&0xff);
+              }
+            } else if (minVersion==0) {
+              if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled)) {
+                ImGui::SetTooltip("this system is not supported by the VGM format!");
+              }
+            } else {
+              if (willExport[i]) hasOneAtLeast=true;
             }
           }
-          ImGui::EndCombo();
-        }
-        ImGui::Checkbox("loop",&vgmExportLoop);
-        ImGui::Text("systems to export:");
-        bool hasOneAtLeast=false;
-        for (int i=0; i<e->song.systemLen; i++) {
-          int minVersion=e->minVGMVersion(e->song.system[i]);
-          ImGui::BeginDisabled(minVersion>vgmExportVersion || minVersion==0);
-          ImGui::Checkbox(fmt::sprintf("%d. %s##_SYSV%d",i+1,getSystemName(e->song.system[i]),i).c_str(),&willExport[i]);
-          ImGui::EndDisabled();
-          if (minVersion>vgmExportVersion) {
-            if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled)) {
-              ImGui::SetTooltip("this system is only available in VGM %d.%.2x and higher!",minVersion>>8,minVersion&0xff);
-            }
-          } else if (minVersion==0) {
-            if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled)) {
-              ImGui::SetTooltip("this system is not supported by the VGM format!");
+          ImGui::Text("select the systems you wish to export,");
+          ImGui::Text("but only up to %d of each type.",(vgmExportVersion>=0x151)?2:1);
+          if (hasOneAtLeast) {
+            if (ImGui::MenuItem("click to export")) {
+              openFileDialog(GUI_FILE_EXPORT_VGM);
             }
           } else {
-            if (willExport[i]) hasOneAtLeast=true;
+            ImGui::Text("nothing to export");
           }
+          ImGui::EndMenu();
         }
-        ImGui::Text("select the systems you wish to export,");
-        ImGui::Text("but only up to %d of each type.",(vgmExportVersion>=0x151)?2:1);
-        if (hasOneAtLeast) {
-          if (ImGui::MenuItem("click to export")) {
-            openFileDialog(GUI_FILE_EXPORT_VGM);
+        ImGui::Separator();
+        if (ImGui::BeginMenu("add system...")) {
+          for (int j=0; availableSystems[j]; j++) {
+            if (!settings.hiddenSystems && (availableSystems[j]==DIV_SYSTEM_YMU759 || availableSystems[j]==DIV_SYSTEM_DUMMY || availableSystems[j]==DIV_SYSTEM_SOUND_UNIT)) continue;
+            sysAddOption((DivSystem)availableSystems[j]);
           }
-        } else {
-          ImGui::Text("nothing to export");
+          ImGui::EndMenu();
         }
-        ImGui::EndMenu();
-      }
-      ImGui::Separator();
-      if (ImGui::BeginMenu("add system...")) {
-        for (int j=0; availableSystems[j]; j++) {
-          if (!settings.hiddenSystems && (availableSystems[j]==DIV_SYSTEM_YMU759 || availableSystems[j]==DIV_SYSTEM_DUMMY || availableSystems[j]==DIV_SYSTEM_SOUND_UNIT)) continue;
-          sysAddOption((DivSystem)availableSystems[j]);
-        }
-        ImGui::EndMenu();
-      }
-      if (ImGui::BeginMenu("configure system...")) {
-        for (int i=0; i<e->song.systemLen; i++) {
-          if (ImGui::TreeNode(fmt::sprintf("%d. %s##_SYSP%d",i+1,getSystemName(e->song.system[i]),i).c_str())) {
-            drawSysConf(i,e->song.system[i],e->song.systemFlags[i],true);
-            ImGui::TreePop();
-          }
-        }
-        ImGui::EndMenu();
-      }
-      if (ImGui::BeginMenu("change system...")) {
-        ImGui::Checkbox("Preserve channel positions",&preserveChanPos);
-        for (int i=0; i<e->song.systemLen; i++) {
-          if (ImGui::BeginMenu(fmt::sprintf("%d. %s##_SYSC%d",i+1,getSystemName(e->song.system[i]),i).c_str())) {
-            for (int j=0; availableSystems[j]; j++) {
-              if (!settings.hiddenSystems && (availableSystems[j]==DIV_SYSTEM_YMU759 || availableSystems[j]==DIV_SYSTEM_DUMMY || availableSystems[j]==DIV_SYSTEM_SOUND_UNIT)) continue;
-              sysChangeOption(i,(DivSystem)availableSystems[j]);
-            }
-            ImGui::EndMenu();
-          }
-        }
-        ImGui::EndMenu();
-      }
-      if (ImGui::BeginMenu("remove system...")) {
-        ImGui::Checkbox("Preserve channel positions",&preserveChanPos);
-        for (int i=0; i<e->song.systemLen; i++) {
-          if (ImGui::MenuItem(fmt::sprintf("%d. %s##_SYSR%d",i+1,getSystemName(e->song.system[i]),i).c_str())) {
-            if (!e->removeSystem(i,preserveChanPos)) {
-              showError("cannot remove system! ("+e->getLastError()+")");
+        if (ImGui::BeginMenu("configure system...")) {
+          for (int i=0; i<e->song.systemLen; i++) {
+            if (ImGui::TreeNode(fmt::sprintf("%d. %s##_SYSP%d",i+1,getSystemName(e->song.system[i]),i).c_str())) {
+              drawSysConf(i,e->song.system[i],e->song.systemFlags[i],true);
+              ImGui::TreePop();
             }
           }
+          ImGui::EndMenu();
+        }
+        if (ImGui::BeginMenu("change system...")) {
+          ImGui::Checkbox("Preserve channel positions",&preserveChanPos);
+          for (int i=0; i<e->song.systemLen; i++) {
+            if (ImGui::BeginMenu(fmt::sprintf("%d. %s##_SYSC%d",i+1,getSystemName(e->song.system[i]),i).c_str())) {
+              for (int j=0; availableSystems[j]; j++) {
+                if (!settings.hiddenSystems && (availableSystems[j]==DIV_SYSTEM_YMU759 || availableSystems[j]==DIV_SYSTEM_DUMMY || availableSystems[j]==DIV_SYSTEM_SOUND_UNIT)) continue;
+                sysChangeOption(i,(DivSystem)availableSystems[j]);
+              }
+              ImGui::EndMenu();
+            }
+          }
+          ImGui::EndMenu();
+        }
+        if (ImGui::BeginMenu("remove system...")) {
+          ImGui::Checkbox("Preserve channel positions",&preserveChanPos);
+          for (int i=0; i<e->song.systemLen; i++) {
+            if (ImGui::MenuItem(fmt::sprintf("%d. %s##_SYSR%d",i+1,getSystemName(e->song.system[i]),i).c_str())) {
+              if (!e->removeSystem(i,preserveChanPos)) {
+                showError("cannot remove system! ("+e->getLastError()+")");
+              }
+            }
+          }
+          ImGui::EndMenu();
+        }
+        ImGui::Separator();
+        if (ImGui::MenuItem("restore backup",BIND_FOR(GUI_ACTION_OPEN_BACKUP))) {
+          doAction(GUI_ACTION_OPEN_BACKUP);
+        }
+        ImGui::Separator();
+        if (ImGui::MenuItem("exit")) {
+          if (modified) {
+            showWarning("Unsaved changes! Save before quitting?",GUI_WARN_QUIT);
+          } else {
+            quit=true;
+          }
         }
         ImGui::EndMenu();
       }
-      ImGui::Separator();
-      if (ImGui::MenuItem("restore backup",BIND_FOR(GUI_ACTION_OPEN_BACKUP))) {
-        doAction(GUI_ACTION_OPEN_BACKUP);
+      if (ImGui::BeginMenu("edit")) {
+        if (ImGui::MenuItem("undo",BIND_FOR(GUI_ACTION_UNDO))) doUndo();
+        if (ImGui::MenuItem("redo",BIND_FOR(GUI_ACTION_REDO))) doRedo();
+        ImGui::Separator();
+        editOptions(true);
+        ImGui::Separator();
+        if (ImGui::MenuItem("clear...")) {
+          showWarning("Are you sure you want to clear... (cannot be undone!)",GUI_WARN_CLEAR);
+        }
+        ImGui::EndMenu();
       }
-      ImGui::Separator();
-      if (ImGui::MenuItem("exit")) {
-        if (modified) {
-          showWarning("Unsaved changes! Save before quitting?",GUI_WARN_QUIT);
-        } else {
-          quit=true;
+      if (ImGui::BeginMenu("settings")) {
+  #ifndef IS_MOBILE
+        if (ImGui::MenuItem("full screen",BIND_FOR(GUI_ACTION_FULLSCREEN),fullScreen)) {
+          doAction(GUI_ACTION_FULLSCREEN);
+        }
+  #endif
+        if (ImGui::MenuItem("lock layout (not working!)",NULL,lockLayout)) {
+          lockLayout=!lockLayout;
+        }
+        if (ImGui::MenuItem("visualizer",NULL,fancyPattern)) {
+          fancyPattern=!fancyPattern;
+          e->enableCommandStream(fancyPattern);
+          e->getCommandStream(cmdStream);
+          cmdStream.clear();
+        }
+        if (ImGui::MenuItem("reset layout")) {
+          showWarning("Are you sure you want to reset the workspace layout?",GUI_WARN_RESET_LAYOUT);
+        }
+        if (ImGui::MenuItem("settings...",BIND_FOR(GUI_ACTION_WINDOW_SETTINGS))) {
+          syncSettings();
+          settingsOpen=true;
+        }
+        ImGui::EndMenu();
+      }
+      if (ImGui::BeginMenu("window")) {
+        if (ImGui::MenuItem("song information",BIND_FOR(GUI_ACTION_WINDOW_SONG_INFO),songInfoOpen)) songInfoOpen=!songInfoOpen;
+        if (ImGui::MenuItem("subsongs",BIND_FOR(GUI_ACTION_WINDOW_SUBSONGS),subSongsOpen)) subSongsOpen=!subSongsOpen;
+        if (ImGui::MenuItem("instruments",BIND_FOR(GUI_ACTION_WINDOW_INS_LIST),insListOpen)) insListOpen=!insListOpen;
+        if (ImGui::MenuItem("wavetables",BIND_FOR(GUI_ACTION_WINDOW_WAVE_LIST),waveListOpen)) waveListOpen=!waveListOpen;
+        if (ImGui::MenuItem("samples",BIND_FOR(GUI_ACTION_WINDOW_SAMPLE_LIST),sampleListOpen)) sampleListOpen=!sampleListOpen;
+        if (ImGui::MenuItem("orders",BIND_FOR(GUI_ACTION_WINDOW_ORDERS),ordersOpen)) ordersOpen=!ordersOpen;
+        if (ImGui::MenuItem("pattern",BIND_FOR(GUI_ACTION_WINDOW_PATTERN),patternOpen)) patternOpen=!patternOpen;
+        if (ImGui::MenuItem("mixer",BIND_FOR(GUI_ACTION_WINDOW_MIXER),mixerOpen)) mixerOpen=!mixerOpen;
+        if (ImGui::MenuItem("channels",BIND_FOR(GUI_ACTION_WINDOW_CHANNELS),channelsOpen)) channelsOpen=!channelsOpen;
+        if (ImGui::MenuItem("compatibility flags",BIND_FOR(GUI_ACTION_WINDOW_COMPAT_FLAGS),compatFlagsOpen)) compatFlagsOpen=!compatFlagsOpen;
+        if (ImGui::MenuItem("song comments",BIND_FOR(GUI_ACTION_WINDOW_NOTES),notesOpen)) notesOpen=!notesOpen;
+        ImGui::Separator();
+        if (ImGui::MenuItem("instrument editor",BIND_FOR(GUI_ACTION_WINDOW_INS_EDIT),insEditOpen)) insEditOpen=!insEditOpen;
+        if (ImGui::MenuItem("wavetable editor",BIND_FOR(GUI_ACTION_WINDOW_WAVE_EDIT),waveEditOpen)) waveEditOpen=!waveEditOpen;
+        if (ImGui::MenuItem("sample editor",BIND_FOR(GUI_ACTION_WINDOW_SAMPLE_EDIT),sampleEditOpen)) sampleEditOpen=!sampleEditOpen;
+        ImGui::Separator();
+        if (ImGui::MenuItem("play/edit controls",BIND_FOR(GUI_ACTION_WINDOW_EDIT_CONTROLS),editControlsOpen)) editControlsOpen=!editControlsOpen;
+        if (ImGui::MenuItem("piano/input pad",BIND_FOR(GUI_ACTION_WINDOW_PIANO),pianoOpen)) pianoOpen=!pianoOpen;
+        if (ImGui::MenuItem("oscilloscope (master)",BIND_FOR(GUI_ACTION_WINDOW_OSCILLOSCOPE),oscOpen)) oscOpen=!oscOpen;
+        if (ImGui::MenuItem("oscilloscope (per-channel)",BIND_FOR(GUI_ACTION_WINDOW_CHAN_OSC),chanOscOpen)) chanOscOpen=!chanOscOpen;
+        if (ImGui::MenuItem("volume meter",BIND_FOR(GUI_ACTION_WINDOW_VOL_METER),volMeterOpen)) volMeterOpen=!volMeterOpen;
+        if (ImGui::MenuItem("register view",BIND_FOR(GUI_ACTION_WINDOW_REGISTER_VIEW),regViewOpen)) regViewOpen=!regViewOpen;
+        if (ImGui::MenuItem("log viewer",BIND_FOR(GUI_ACTION_WINDOW_LOG),logOpen)) logOpen=!logOpen;
+        if (ImGui::MenuItem("statistics",BIND_FOR(GUI_ACTION_WINDOW_STATS),statsOpen)) statsOpen=!statsOpen;
+      
+        ImGui::EndMenu();
+      }
+      if (ImGui::BeginMenu("help")) {
+        if (ImGui::MenuItem("effect list",BIND_FOR(GUI_ACTION_WINDOW_EFFECT_LIST),effectListOpen)) effectListOpen=!effectListOpen;
+        if (ImGui::MenuItem("debug menu",BIND_FOR(GUI_ACTION_WINDOW_DEBUG))) debugOpen=!debugOpen;
+        if (ImGui::MenuItem("panic",BIND_FOR(GUI_ACTION_PANIC))) e->syncReset();
+        if (ImGui::MenuItem("about...",BIND_FOR(GUI_ACTION_WINDOW_ABOUT))) {
+          aboutOpen=true;
+          aboutScroll=0;
+        }
+        ImGui::EndMenu();
+      }
+      ImGui::PushStyleColor(ImGuiCol_Text,uiColors[GUI_COLOR_PLAYBACK_STAT]);
+      if (e->isPlaying()) {
+        int totalTicks=e->getTotalTicks();
+        int totalSeconds=e->getTotalSeconds();
+        ImGui::Text("| Speed %d:%d @ %gHz (%g BPM) | Order %d/%d | Row %d/%d | %d:%.2d:%.2d.%.2d",e->getSpeed1(),e->getSpeed2(),e->getCurHz(),calcBPM(e->getSpeed1(),e->getSpeed2(),e->getCurHz(),e->curSubSong->virtualTempoN,e->curSubSong->virtualTempoD),e->getOrder(),e->curSubSong->ordersLen,e->getRow(),e->curSubSong->patLen,totalSeconds/3600,(totalSeconds/60)%60,totalSeconds%60,totalTicks/10000);
+      } else {
+        bool hasInfo=false;
+        String info;
+        if (cursor.xCoarse>=0 && cursor.xCoarse<e->getTotalChannelCount()) {
+          DivPattern* p=e->curPat[cursor.xCoarse].getPattern(e->curOrders->ord[cursor.xCoarse][curOrder],false);
+          if (cursor.xFine>=0) switch (cursor.xFine) {
+            case 0: // note
+              if (p->data[cursor.y][0]>0) {
+                if (p->data[cursor.y][0]==100) {
+                  info=fmt::sprintf("Note off (cut)");
+                } else if (p->data[cursor.y][0]==101) {
+                  info=fmt::sprintf("Note off (release)");
+                } else if (p->data[cursor.y][0]==102) {
+                  info=fmt::sprintf("Macro release only");
+                } else {
+                  info=fmt::sprintf("Note on: %s",noteName(p->data[cursor.y][0],p->data[cursor.y][1]));
+                }
+                hasInfo=true;
+              }
+              break;
+            case 1: // instrument
+              if (p->data[cursor.y][2]>-1) {
+                if (p->data[cursor.y][2]>=(int)e->song.ins.size()) {
+                  info=fmt::sprintf("Ins %d: <invalid>",p->data[cursor.y][2]);
+                } else {
+                  DivInstrument* ins=e->getIns(p->data[cursor.y][2]);
+                  info=fmt::sprintf("Ins %d: %s",p->data[cursor.y][2],ins->name);
+                }
+                hasInfo=true;
+              }
+              break;
+            case 2: // volume
+              if (p->data[cursor.y][3]>-1) {
+                int maxVol=e->getMaxVolumeChan(cursor.xCoarse);
+                if (maxVol<1 || p->data[cursor.y][3]>maxVol) {
+                  info=fmt::sprintf("Set volume: %d (%.2X, INVALID!)",p->data[cursor.y][3],p->data[cursor.y][3]);
+                } else {
+                  info=fmt::sprintf("Set volume: %d (%.2X, %d%%)",p->data[cursor.y][3],p->data[cursor.y][3],(p->data[cursor.y][3]*100)/maxVol);
+                }
+                hasInfo=true;
+              }
+              break;
+            default: // effect
+              int actualCursor=((cursor.xFine+1)&(~1));
+              if (p->data[cursor.y][actualCursor]>-1) {
+                info=e->getEffectDesc(p->data[cursor.y][actualCursor],cursor.xCoarse,true);
+                hasInfo=true;
+              }
+              break;
+          }
+        }
+        if (hasInfo && (settings.statusDisplay==0 || settings.statusDisplay==2)) {
+          ImGui::Text("| %s",info.c_str());
+        } else if (settings.statusDisplay==1 || settings.statusDisplay==2) {
+          if (curFileName!="") ImGui::Text("| %s",curFileName.c_str());
         }
       }
-      ImGui::EndMenu();
+      ImGui::PopStyleColor();
+      if (modified) {
+        ImGui::Text("| modified");
+      }
+      ImGui::EndMainMenuBar();
     }
-    if (ImGui::BeginMenu("edit")) {
-      if (ImGui::MenuItem("undo",BIND_FOR(GUI_ACTION_UNDO))) doUndo();
-      if (ImGui::MenuItem("redo",BIND_FOR(GUI_ACTION_REDO))) doRedo();
-      ImGui::Separator();
-      editOptions(true);
-      ImGui::Separator();
-      if (ImGui::MenuItem("clear...")) {
-        showWarning("Are you sure you want to clear... (cannot be undone!)",GUI_WARN_CLEAR);
-      }
-      ImGui::EndMenu();
+
+    if (!mobileUI) {
+      ImGui::DockSpaceOverViewport(NULL,lockLayout?(ImGuiDockNodeFlags_NoResize|ImGuiDockNodeFlags_NoCloseButton|ImGuiDockNodeFlags_NoDocking|ImGuiDockNodeFlags_NoDockingSplitMe|ImGuiDockNodeFlags_NoDockingSplitOther):0);
     }
-    if (ImGui::BeginMenu("settings")) {
-#ifndef IS_MOBILE
-      if (ImGui::MenuItem("full screen",BIND_FOR(GUI_ACTION_FULLSCREEN),fullScreen)) {
-        doAction(GUI_ACTION_FULLSCREEN);
+
+    if (mobileUI) {
+      ImGuiViewport* mainView=ImGui::GetMainViewport();
+      ImGui::SetNextWindowPos(mainView->Pos);
+      ImGui::SetNextWindowSize(mainView->Size);
+      ImGui::SetNextWindowViewport(mainView->ID);
+      ImGuiID dockID=ImGui::GetID("MobileUISpace");
+      ImGuiWindowFlags muiFlags=ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoCollapse|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoDocking|ImGuiWindowFlags_NoBringToFrontOnFocus|ImGuiWindowFlags_NoNavFocus;
+      ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
+      ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
+      ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
+      ImGui::Begin("MobileUI",NULL,muiFlags);
+      ImGui::PopStyleVar(3);
+      if (ImGui::DockBuilderGetNode(dockID)==NULL) {
+        ImGui::DockBuilderRemoveNode(dockID);
+        ImGuiID dn=ImGui::DockBuilderAddNode(dockID);
+        ImGuiID upper, lower, left, right;
+        ImGui::DockBuilderSplitNode(dn,ImGuiDir_Left,0.1f,&left,&right);
+        ImGui::DockBuilderSplitNode(right,ImGuiDir_Down,0.2f,&lower,&upper);
+        ImGui::DockBuilderDockWindow("Mobile Controls",left);
+        ImGui::DockBuilderDockWindow("Pattern",upper);
+        ImGui::DockBuilderDockWindow("Piano",lower);
+        ImGui::DockBuilderFinish(dn);
       }
-#endif
-      if (ImGui::MenuItem("lock layout (not working!)",NULL,lockLayout)) {
-        lockLayout=!lockLayout;
+      ImGui::DockSpace(dockID);
+      ImGui::End();
+
+      if (ImGui::Begin("Mobile Controls")) {
+        ImGui::Text("Hi!");
+        if (ImGui::Button("Get me out of here")) {
+          toggleMobileUI(false);
+        }
       }
-      if (ImGui::MenuItem("visualizer",NULL,fancyPattern)) {
-        fancyPattern=!fancyPattern;
-        e->enableCommandStream(fancyPattern);
-        e->getCommandStream(cmdStream);
-        cmdStream.clear();
-      }
-      if (ImGui::MenuItem("reset layout")) {
-        showWarning("Are you sure you want to reset the workspace layout?",GUI_WARN_RESET_LAYOUT);
-      }
-      if (ImGui::MenuItem("settings...",BIND_FOR(GUI_ACTION_WINDOW_SETTINGS))) {
-        syncSettings();
-        settingsOpen=true;
-      }
-      ImGui::EndMenu();
-    }
-    if (ImGui::BeginMenu("window")) {
-      if (ImGui::MenuItem("song information",BIND_FOR(GUI_ACTION_WINDOW_SONG_INFO),songInfoOpen)) songInfoOpen=!songInfoOpen;
-      if (ImGui::MenuItem("subsongs",BIND_FOR(GUI_ACTION_WINDOW_SUBSONGS),subSongsOpen)) subSongsOpen=!subSongsOpen;
-      if (ImGui::MenuItem("instruments",BIND_FOR(GUI_ACTION_WINDOW_INS_LIST),insListOpen)) insListOpen=!insListOpen;
-      if (ImGui::MenuItem("wavetables",BIND_FOR(GUI_ACTION_WINDOW_WAVE_LIST),waveListOpen)) waveListOpen=!waveListOpen;
-      if (ImGui::MenuItem("samples",BIND_FOR(GUI_ACTION_WINDOW_SAMPLE_LIST),sampleListOpen)) sampleListOpen=!sampleListOpen;
-      if (ImGui::MenuItem("orders",BIND_FOR(GUI_ACTION_WINDOW_ORDERS),ordersOpen)) ordersOpen=!ordersOpen;
-      if (ImGui::MenuItem("pattern",BIND_FOR(GUI_ACTION_WINDOW_PATTERN),patternOpen)) patternOpen=!patternOpen;
-      if (ImGui::MenuItem("mixer",BIND_FOR(GUI_ACTION_WINDOW_MIXER),mixerOpen)) mixerOpen=!mixerOpen;
-      if (ImGui::MenuItem("channels",BIND_FOR(GUI_ACTION_WINDOW_CHANNELS),channelsOpen)) channelsOpen=!channelsOpen;
-      if (ImGui::MenuItem("compatibility flags",BIND_FOR(GUI_ACTION_WINDOW_COMPAT_FLAGS),compatFlagsOpen)) compatFlagsOpen=!compatFlagsOpen;
-      if (ImGui::MenuItem("song comments",BIND_FOR(GUI_ACTION_WINDOW_NOTES),notesOpen)) notesOpen=!notesOpen;
-      ImGui::Separator();
-      if (ImGui::MenuItem("instrument editor",BIND_FOR(GUI_ACTION_WINDOW_INS_EDIT),insEditOpen)) insEditOpen=!insEditOpen;
-      if (ImGui::MenuItem("wavetable editor",BIND_FOR(GUI_ACTION_WINDOW_WAVE_EDIT),waveEditOpen)) waveEditOpen=!waveEditOpen;
-      if (ImGui::MenuItem("sample editor",BIND_FOR(GUI_ACTION_WINDOW_SAMPLE_EDIT),sampleEditOpen)) sampleEditOpen=!sampleEditOpen;
-      ImGui::Separator();
-      if (ImGui::MenuItem("play/edit controls",BIND_FOR(GUI_ACTION_WINDOW_EDIT_CONTROLS),editControlsOpen)) editControlsOpen=!editControlsOpen;
-      if (ImGui::MenuItem("piano/input pad",BIND_FOR(GUI_ACTION_WINDOW_PIANO),pianoOpen)) pianoOpen=!pianoOpen;
-      if (ImGui::MenuItem("oscilloscope (master)",BIND_FOR(GUI_ACTION_WINDOW_OSCILLOSCOPE),oscOpen)) oscOpen=!oscOpen;
-      if (ImGui::MenuItem("oscilloscope (per-channel)",BIND_FOR(GUI_ACTION_WINDOW_CHAN_OSC),chanOscOpen)) chanOscOpen=!chanOscOpen;
-      if (ImGui::MenuItem("volume meter",BIND_FOR(GUI_ACTION_WINDOW_VOL_METER),volMeterOpen)) volMeterOpen=!volMeterOpen;
-      if (ImGui::MenuItem("register view",BIND_FOR(GUI_ACTION_WINDOW_REGISTER_VIEW),regViewOpen)) regViewOpen=!regViewOpen;
-      if (ImGui::MenuItem("log viewer",BIND_FOR(GUI_ACTION_WINDOW_LOG),logOpen)) logOpen=!logOpen;
-      if (ImGui::MenuItem("statistics",BIND_FOR(GUI_ACTION_WINDOW_STATS),statsOpen)) statsOpen=!statsOpen;
-     
-      ImGui::EndMenu();
-    }
-    if (ImGui::BeginMenu("help")) {
-      if (ImGui::MenuItem("effect list",BIND_FOR(GUI_ACTION_WINDOW_EFFECT_LIST),effectListOpen)) effectListOpen=!effectListOpen;
-      if (ImGui::MenuItem("debug menu",BIND_FOR(GUI_ACTION_WINDOW_DEBUG))) debugOpen=!debugOpen;
-      if (ImGui::MenuItem("panic",BIND_FOR(GUI_ACTION_PANIC))) e->syncReset();
-      if (ImGui::MenuItem("about...",BIND_FOR(GUI_ACTION_WINDOW_ABOUT))) {
-        aboutOpen=true;
-        aboutScroll=0;
-      }
-      ImGui::EndMenu();
-    }
-    ImGui::PushStyleColor(ImGuiCol_Text,uiColors[GUI_COLOR_PLAYBACK_STAT]);
-    if (e->isPlaying()) {
-      int totalTicks=e->getTotalTicks();
-      int totalSeconds=e->getTotalSeconds();
-      ImGui::Text("| Speed %d:%d @ %gHz (%g BPM) | Order %d/%d | Row %d/%d | %d:%.2d:%.2d.%.2d",e->getSpeed1(),e->getSpeed2(),e->getCurHz(),calcBPM(e->getSpeed1(),e->getSpeed2(),e->getCurHz(),e->curSubSong->virtualTempoN,e->curSubSong->virtualTempoD),e->getOrder(),e->curSubSong->ordersLen,e->getRow(),e->curSubSong->patLen,totalSeconds/3600,(totalSeconds/60)%60,totalSeconds%60,totalTicks/10000);
+      ImGui::End();
+      
+      drawPattern();
+      drawPiano();
     } else {
-      bool hasInfo=false;
-      String info;
-      if (cursor.xCoarse>=0 && cursor.xCoarse<e->getTotalChannelCount()) {
-        DivPattern* p=e->curPat[cursor.xCoarse].getPattern(e->curOrders->ord[cursor.xCoarse][curOrder],false);
-        if (cursor.xFine>=0) switch (cursor.xFine) {
-          case 0: // note
-            if (p->data[cursor.y][0]>0) {
-              if (p->data[cursor.y][0]==100) {
-                info=fmt::sprintf("Note off (cut)");
-              } else if (p->data[cursor.y][0]==101) {
-                info=fmt::sprintf("Note off (release)");
-              } else if (p->data[cursor.y][0]==102) {
-                info=fmt::sprintf("Macro release only");
-              } else {
-                info=fmt::sprintf("Note on: %s",noteName(p->data[cursor.y][0],p->data[cursor.y][1]));
-              }
-              hasInfo=true;
-            }
-            break;
-          case 1: // instrument
-            if (p->data[cursor.y][2]>-1) {
-              if (p->data[cursor.y][2]>=(int)e->song.ins.size()) {
-                info=fmt::sprintf("Ins %d: <invalid>",p->data[cursor.y][2]);
-              } else {
-                DivInstrument* ins=e->getIns(p->data[cursor.y][2]);
-                info=fmt::sprintf("Ins %d: %s",p->data[cursor.y][2],ins->name);
-              }
-              hasInfo=true;
-            }
-            break;
-          case 2: // volume
-            if (p->data[cursor.y][3]>-1) {
-              int maxVol=e->getMaxVolumeChan(cursor.xCoarse);
-              if (maxVol<1 || p->data[cursor.y][3]>maxVol) {
-                info=fmt::sprintf("Set volume: %d (%.2X, INVALID!)",p->data[cursor.y][3],p->data[cursor.y][3]);
-              } else {
-                info=fmt::sprintf("Set volume: %d (%.2X, %d%%)",p->data[cursor.y][3],p->data[cursor.y][3],(p->data[cursor.y][3]*100)/maxVol);
-              }
-              hasInfo=true;
-            }
-            break;
-          default: // effect
-            int actualCursor=((cursor.xFine+1)&(~1));
-            if (p->data[cursor.y][actualCursor]>-1) {
-              info=e->getEffectDesc(p->data[cursor.y][actualCursor],cursor.xCoarse,true);
-              hasInfo=true;
-            }
-            break;
-        }
-      }
-      if (hasInfo && (settings.statusDisplay==0 || settings.statusDisplay==2)) {
-        ImGui::Text("| %s",info.c_str());
-      } else if (settings.statusDisplay==1 || settings.statusDisplay==2) {
-        if (curFileName!="") ImGui::Text("| %s",curFileName.c_str());
-      }
+      drawSubSongs();
+      drawPattern();
+      drawEditControls();
+      drawSongInfo();
+      drawOrders();
+      drawSampleList();
+      drawSampleEdit();
+      drawWaveList();
+      drawWaveEdit();
+      drawInsList();
+      drawInsEdit();
+      drawMixer();
+
+      readOsc();
+
+      drawOsc();
+      drawChanOsc();
+      drawVolMeter();
+      drawSettings();
+      drawDebug();
+      drawStats();
+      drawCompatFlags();
+      drawPiano();
+      drawNotes();
+      drawChannels();
+      drawRegView();
+      drawLog();
+      drawEffectList();
     }
-    ImGui::PopStyleColor();
-    if (modified) {
-      ImGui::Text("| modified");
-    }
-    ImGui::EndMainMenuBar();
-
-    ImGui::DockSpaceOverViewport(NULL,lockLayout?(ImGuiDockNodeFlags_NoResize|ImGuiDockNodeFlags_NoCloseButton|ImGuiDockNodeFlags_NoDocking|ImGuiDockNodeFlags_NoDockingSplitMe|ImGuiDockNodeFlags_NoDockingSplitOther):0);
-
-    drawSubSongs();
-    drawPattern();
-    drawEditControls();
-    drawSongInfo();
-    drawOrders();
-    drawSampleList();
-    drawSampleEdit();
-    drawWaveList();
-    drawWaveEdit();
-    drawInsList();
-    drawInsEdit();
-    drawMixer();
-
-    readOsc();
-
-    drawOsc();
-    drawChanOsc();
-    drawVolMeter();
-    drawSettings();
-    drawDebug();
-    drawStats();
-    drawCompatFlags();
-    drawPiano();
-    drawNotes();
-    drawChannels();
-    drawRegView();
-    drawLog();
-    drawEffectList();
 
     if (inspectorOpen) ImGui::ShowMetricsWindow(&inspectorOpen);
 
@@ -3543,8 +3600,10 @@ bool FurnaceGUI::loop() {
         case GUI_WARN_RESET_LAYOUT:
           if (ImGui::Button("Yes")) {
             ImGui::CloseCurrentPopup();
-            ImGui::LoadIniSettingsFromMemory(defaultLayout);
-            ImGui::SaveIniSettingsToDisk(finalLayoutPath);
+            if (!mobileUI) {
+              ImGui::LoadIniSettingsFromMemory(defaultLayout);
+              ImGui::SaveIniSettingsToDisk(finalLayoutPath);
+            }
           }
           ImGui::SameLine();
           if (ImGui::Button("No")) {
@@ -3943,8 +4002,7 @@ bool FurnaceGUI::init() {
   prepareLayout();
 
   ImGui::GetIO().ConfigFlags|=ImGuiConfigFlags_DockingEnable;
-  ImGui::GetIO().IniFilename=finalLayoutPath;
-  ImGui::LoadIniSettingsFromDisk(finalLayoutPath);
+  toggleMobileUI(mobileUI,true);
 
   updateWindowTitle();
 
@@ -3972,7 +4030,9 @@ bool FurnaceGUI::init() {
 }
 
 bool FurnaceGUI::finish() {
-  ImGui::SaveIniSettingsToDisk(finalLayoutPath);
+  if (!mobileUI) {
+    ImGui::SaveIniSettingsToDisk(finalLayoutPath);
+  }
   ImGui_ImplSDLRenderer_Shutdown();
   ImGui_ImplSDL2_Shutdown();
   ImGui::DestroyContext();
diff --git a/src/gui/gui.h b/src/gui/gui.h
index a99ee90a..b1384170 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -806,7 +806,7 @@ class FurnaceGUI {
 
   String workingDir, fileName, clipboard, warnString, errorString, lastError, curFileName, nextFile;
   String workingDirSong, workingDirIns, workingDirWave, workingDirSample, workingDirAudioExport, workingDirVGMExport, workingDirFont, workingDirColors, workingDirKeybinds, workingDirLayout, workingDirROM;
-  String mmlString[17];
+  String mmlString[32];
   String mmlStringW;
 
   bool quit, warnQuit, willCommit, edit, modified, displayError, displayExporting, vgmExportLoop, wantCaptureKeyboard, oldWantCaptureKeyboard, displayMacroMenu;
@@ -1264,6 +1264,8 @@ class FurnaceGUI {
   void actualWaveList();
   void actualSampleList();
 
+  void toggleMobileUI(bool enable, bool force=false);
+
   void drawEditControls();
   void drawSongInfo();
   void drawOrders();
diff --git a/src/gui/settings.cpp b/src/gui/settings.cpp
index 983e3b33..03746c51 100644
--- a/src/gui/settings.cpp
+++ b/src/gui/settings.cpp
@@ -1139,13 +1139,6 @@ void FurnaceGUI::drawSettings() {
             settings.oplStandardWaveNames=oplStandardWaveNamesB;
           }
 
-          if (nonLatchNibble) {
-            bool hiddenSystemsB=settings.hiddenSystems;
-            if (ImGui::Checkbox(":smile: :star_struck: :sunglasses: :ok_hand:",&hiddenSystemsB)) {
-              settings.hiddenSystems=hiddenSystemsB;
-            }
-          }
-
           bool overflowHighlightB=settings.overflowHighlight;
           if (ImGui::Checkbox("Overflow pattern highlights",&overflowHighlightB)) {
             settings.overflowHighlight=overflowHighlightB;
@@ -1799,6 +1792,47 @@ void FurnaceGUI::drawSettings() {
         ImGui::EndChild();
         ImGui::EndTabItem();
       }
+      if (nonLatchNibble) {
+        // ok, so you decided to read the code.
+        // these are the cheat codes:
+        // "Debug" - toggles mobile UI
+        // "Nice Amiga cover of the song!" - enables hidden systems (YMU759/SoundUnit/Dummy)
+        if (ImGui::BeginTabItem("Cheat Codes")) {
+          ImVec2 settingsViewSize=ImGui::GetContentRegionAvail();
+          settingsViewSize.y-=ImGui::GetFrameHeight()+ImGui::GetStyle().WindowPadding.y;
+          if (ImGui::BeginChild("SettingsView",settingsViewSize)) {
+            ImGui::Text("Enter code:");
+            ImGui::InputText("##CheatCode",&mmlString[31]);
+            if (ImGui::Button("Submit")) {
+              unsigned int checker=0x11111111;
+              unsigned int checker1=0;
+              int index=0;
+              mmlString[30]="invalid code";
+
+              for (char& i: mmlString[31]) {
+                checker^=((unsigned int)i)<<index;
+                checker1+=i;
+                checker=(checker>>1|(((checker)^(checker>>2)^(checker>>3)^(checker>>5))&1)<<31);
+                checker1<<=1;
+                index=(index+1)&31;
+              }
+              if (checker==0x90888b65 && checker1==0x1482) {
+                mmlString[30]="toggled alternate UI";
+                toggleMobileUI(!mobileUI);
+              }
+              if (checker==0x5a42a113 && checker1==0xe4ef451e) {
+                mmlString[30]=":smile: :star_struck: :sunglasses: :ok_hand:";
+                settings.hiddenSystems=!settings.hiddenSystems;
+              }
+
+              mmlString[31]="";
+            }
+            ImGui::Text("%s",mmlString[30].c_str());
+          }
+          ImGui::EndChild();
+          ImGui::EndTabItem();
+        }
+      }
       ImGui::EndTabBar();
     }
     ImGui::Separator();
@@ -2292,6 +2326,10 @@ bool FurnaceGUI::exportKeybinds(String path) {
 }
 
 bool FurnaceGUI::importLayout(String path) {
+  if (mobileUI) {
+    logW("but you are on the mobile UI!");
+    return false;
+  }
   FILE* f=ps_fopen(path.c_str(),"rb");
   if (f==NULL) {
     logW("error while opening keybind file for import: %s",strerror(errno));
@@ -2338,6 +2376,10 @@ bool FurnaceGUI::importLayout(String path) {
 }
 
 bool FurnaceGUI::exportLayout(String path) {
+  if (mobileUI) {
+    logW("but you are on the mobile UI!");
+    return false;
+  }
   FILE* f=ps_fopen(path.c_str(),"wb");
   if (f==NULL) {
     logW("error while opening layout file for export: %s",strerror(errno));
diff --git a/src/gui/songInfo.cpp b/src/gui/songInfo.cpp
index 93fe14bc..4328b840 100644
--- a/src/gui/songInfo.cpp
+++ b/src/gui/songInfo.cpp
@@ -42,16 +42,19 @@ void FurnaceGUI::drawSongInfo() {
       if (ImGui::InputText("##Name",&e->song.name)) { MARK_MODIFIED
         updateWindowTitle();
       }
-      if (e->song.name.size()==27) {
+      if (e->song.insLen==2) {
         unsigned int checker=0x11111111;
         unsigned int checker1=0;
-        for (int i=0; i<27; i++) {
-          checker^=e->song.name[i]<<i;
-          checker1+=e->song.name[i];
-          checker=(checker>>1|(((checker)^(checker>>2)^(checker>>3)^(checker>>5))&1)<<31);
-          checker1<<=1;
+        DivInstrument* ins=e->getIns(1);
+        if (ins->name.size()==15 && e->curSubSong->ordersLen==8) {
+          for (int i=0; i<15; i++) {
+            checker^=ins->name[i]<<i;
+            checker1+=ins->name[i];
+            checker=(checker>>1|(((checker)^(checker>>2)^(checker>>3)^(checker>>5))&1)<<31);
+            checker1<<=1;
+          }
+          if (checker==0x5ec4497d && checker1==0x6347ee) nonLatchNibble=true;
         }
-        if (checker==0x94ffb4f7 && checker1==0x801c68a6) nonLatchNibble=true;
       }
       ImGui::TableNextRow();
       ImGui::TableNextColumn();