Back-up OrgMaker 2.1.0 here.
Drums:
Tracks Q/U/I: Bass01
W: Snare01
E: HiClose
R: HiOpen
T: Tom01
Y: Per01
Drum tracks U and I must remain empty.
...
That "drums" file helps.
But still... hard-coded drums make me sad.
That makes composing problematic if you intend to use them in your mods ('cause it causes the mod to crash). But hey, if any of us use it to make music, at least it's better than KarjamP's version of Megalovania. At least Kim had the sense to use someone else's version for her mods.