Who knows when Hatsune Miku will be ported to the Mac? Until then, there’s the Delay Lama:
(Via Fellini 8.5)
If that’s too passé for your taste, you can listen to music made with Nintendo Gameboy chips at the Blip Festival. Want to make your own bleeps and bloops, but you don’t have any old video games on hand to take apart? Try quadraSID.
If tht’s too old-school for you, consider Reactable. (Via Fred.)
Update: Accordion Hero? Sure, why not?
Man, that just about broke my brain… especially once I realized that I recognized the song. Oy!