diff --git a/instruments/FM/bass/Basses.opm b/instruments/FM/bass/Basses.opm
index 0b308cbf..d1e025ab 100644
--- a/instruments/FM/bass/Basses.opm
+++ b/instruments/FM/bass/Basses.opm
@@ -78,10 +78,10 @@ C2: 31  9  0 11 15   0  0  1  3 0 0
 // vgm offset = 00001d22, channels used = 1-------
 @:8 Synth Bass 2
 LFO: 0 0 0 0 0
-CH: 64 5 4 0 0 120 0
-M1: 27 10  5 11  7  21  1  1  3 0 0
-C1: 31  0 15 11  7   3  0  1  3 0 0
-M2: 22 13 13  8  6  21  3 12  3 0 0
-C2: 31 15 16 11  8  13  0  2  3 0 0
+CH: 64 0 0 0 0 120 0
+M1: 22 12 20  8 15  39  3 12  3 0 0
+C1: 31 13 11 11  4  25  3  4  3 0 0
+M2: 27  0  5 11  7  23  1  1  3 0 0
+C2: 31  0 15 11  7   3  0  1  3 0 0
 
 
diff --git a/instruments/FM/bass/Yamaha MU Synth Bass 2.dmp b/instruments/FM/bass/Yamaha MU Synth Bass 2.dmp
index 08f8faca..97021cef 100644
Binary files a/instruments/FM/bass/Yamaha MU Synth Bass 2.dmp and b/instruments/FM/bass/Yamaha MU Synth Bass 2.dmp differ