I haven't listened much to Minnesota Public Radio's new station The Current, but I hear it's doing extremely well. After sampling a bit of their Fourth of July offering (after following a link from TVBarn.com) I can understand why. They had 10 hours of music covering the 50 states.

Dubbed Fifty Songs for Fifty States, it aired from 2 p.m. to midnight on July 4. The playlist is chock full of classics and some unknowns. Definitely worth checking out the streaming MP3s.