I need some good, general "house" music for a theatre production - any suggestions?

I’m looking for some music that can be played before, after, and at intermission for a play called “Alice’s Adventures in Wonderland.” There isn’t really a genre of music that goes with it (although I do have several vocalless tracks that I play within the show), so I’m looking for music that is musically neutral (everyone can enjoy it) and something that makes nice background music to listen to.

I’m looking for specific tracks, and a good variety of music. I’ll get the music through Grooveshark, so money isn’t an issue.

Any suggestions?