How about a device that allows you to stream music stations? The background music here is very cool, but anything becomes unlistenable with endless repetition.
If you still wanted to keep the mood special, how about content from your musicians that they've made for purposes other than Glitch which otherwise wouldn't get much play? It would still be unique to us and wouldn't be as jarring as having Cee Lo or Foo Fighters or whatever crowding into our fantasy world, but would also provide enough variation so that all of us who have turned off the background music (thanks very much for that feature, by the way) would have the opportunity to enjoy a little musical accompaniment to our pickaxing.