...Maybe. I guess some of the middle parts might sound slightly weird out-of-context, especially to someone who hasn't heard the music before in the proper context of the game's intro sequence.
Although I think some editing could help with that.
My main concern with the overly short MIDI is that, as you know, Cheapo has a bug whereby if the game's paused, the music won't loop when it reaches the end of the MIDI, until you unpause the game. With your current Prince MIDI, this is almost guarantee to happen for anyone who's figuring out the level.
Any thoughts about sound effects? I can help with those too. (Well, it's really just a matter of capturing to WAV via DOSBox.)