The note display of the Drum Editor displays notes as diamond
symbols. The vertical position of the notes corresponds
to the drum sound list to the left, while the horizontal
position corresponds to the note’s position in time, just as in
the Key Editor. Note, however, that the diamond symbols do
not indicate the length of the notes. This makes sense,
since drum sounds most often are “one-shot” samples that
play to their end regardless of the note lengths.