Commands are of the form xy, Cmd0 and Cmd1 are independent
from each other and both can be a command:
x 0 - Nothing
1 - Nothing
2 - Set Cutoff
3 - Set resonanceset
4 - Set Envmod
5 - Set Cutoff decay
6 - Set Accent
7 - Set finetune
y 0 to F - 0% to 100%
So "C-4 .. 01 21 3A" would cause a C-4 note with low cutoff
and high resonance.