Exclusive class override.
Chorus send level 0-127.
Level in 0 - 127 range.
Pan, 1-64-127, 0 is random. This adds to the channel pan!
Pitch offset in semitones. Relative value. May be floating point! (GS half-semitone coarse tune resolution)
Pitch offset in cents. Relative value.
Reverb send level 0-127.
If note off should be received. Note: Due to the way sound banks implement drums (as 100s release time), this means killing the voice on note off, not releasing it.
If note on should be received.
Variation/delay send level 0-127.
Represents a single drum instrument's XG/GS parameters.