(snip) But, I wonder is Sphere's JS fast enough? Fast enough to run the song on top of other logic?I'll have to try that someday.
Considering the web version NEO linked skipped for me quite badly at a few points, with an i7 and Firefox 30, I'm going to guess probably not. Also, out of curiosity, how does this output the sound? If there's a completely portable way to do that with JS's standard library, I don't know about it.
@Lord English: Y U No Use Fx32?
the music seems to be playing mainly through the right speaker for me. (Chrome stable, 64-bit Xubuntu 14.04)