Git is quite useless for binary data in the general case. I mean, did you use Git to manage your audio during production? If not, why use Github -- a service built around Git and collaboration? Based on the commit history it looks like you just threw a repo together so you could host it on Github.
edit: As an aside, as an artistic statement on why autotune is terrible, I was thinking it would be interesting if someone would show the world what classic songs, ruined by autotune, would sound like.
I'm sure if everyone agreed on a DAW suite, something like this would be rather easy to implement.
Yeah, but not for Git. If you tried that with Git you'd basically have a nice wrapper around tarballing your work directory every morning.
git branch newleadsinger
git commit -m "added new main vocal track"
git commit -m "trying new drum track"
git commit -m "guitar track moved up a key"
git commit -m "more cowbell"
git commit -m "less cowbell"
git commit -m "deleted cowbell track"
git commit -m "added echo to vocal track"
Also the main reason I used github is the ease of forking, and strong community behind it.