A biomedical engineering student who mods old videogame equipment has a new project:

I am prototyping, designing and assembling a special cartridge called Chip Maestro which can be used in any Nintendo Entertainment System. This cartridge will accept a MIDI input from any instrument, and by passing the MIDI notes through the NES, the cartridge will make the NES synthesize 8-bits of awesome in true NES squarewavey goodness. See the video for more details!

Check it out here and take a look at more cool Kickstarter projects on our curated page.