Hey Qix, long time no see.
Hmm, too bad, seems you've already gotten a request for help and might end up being too busy.
But in case you decide you'd like to do more, or that collaboration falls through . . . an Indie game? Not exactly. How about music for a Single Player expansion to Tron 2.0.
Our team is currently working on one last expansion. There have already been two prior ones, as can be seen here:
One of the places where you can see our progress on the third (and final) one, is in this video:
We already have a fair amount of music for the various levels, but could still use more. We'd like to use as little of the game's own music as possible, and rather include mostly new, fresh themes.
As you can imagine, it hasn't always been easy finding "Tron-like" music that fits for the expansion. As someone who's a fan of Tron, I'm sure you could come up with some tracks that would fit very nicely.
If you should decide you'd be interested in working with us on User Error 3, then we can probably continue discussing it through PMs or via e-mail.
Thanks, regardless of what you decide, and wishing you success and good luck.