I went to play Fujiwara no Mokou's Theme through my Roland Atelier AT-30 [1], but the MIDI file (at 194.4 MB!) is a tad too big to fit on a 3.5" floppy disk.

It's got a pretty decent sequencer, and had no problems playing Circus Galop.

[1] http://www.youtube.com/watch?v=vVuNg9XWcBA