I'm a bit of a Quell fanatic. I love Quell Reflect. I haven't tried Quell yet, but what I do know about Quell is that Quell Reflect's soundtrack is better than the original's.
Anyhow, you can thank me for recommending this app without even saying why (for the most part).
Amazon (which is an Android OS, by the way):
PS: Hit the fan in Quell Reflect for some secret levels that are really hard. I'm serious. Hard.
PPS: Quell is working on their next game already.
EDIT: Steven Cravis has made all of the original three tracks on his website "previews", and added new "previews" of other pieces of music, therefore rendering the above music player useless (should display an error message). I highly dislike. But if you want to, fine then.