# bass (ch 1) | kick (ch 10) | snare (ch 11) | hats (ch 12): one drum per MIDI channel
.0..9....a...b.
.A..O9...N...N.
@L5.EX9.6B5.8H.
.E2..E1..E1..E0
2S...!..3S...!.
.!.......!.....