@Douglaaas I know, and I really wish I could but, at least from my attempts, using other monsters gives some off-beat (or, rather, off-note? I don't know music terminology, sorry) sounds that really threw me off. Maybe it has something to do with the swing rhythm of the song? I probably chose a song that is too difficult to chart for someone doing it for the first time.

I know its your first chart, but you REALLY need to transform overlapping monsters into another mosters (like armaddilos, shielded skeletons, etc)