If you haven't heard of Daytrotter, they're the guys who find the best indie bands from around the country and invite them up to their studios to record a session. They then put the tracks online as free mp3 downloads. Daytrotter has become one of the most widely-read music sites out their for its commitment to connecting fans with free, unique tracks from their favorite bands or bands they've never heard of before. It's a great way to discover new music without buying a whole new album, and worth following just for Sean Moeller's stellar write-ups of each band's sound. 

Oklahoma natives Grooms recently became the eighth OK band to record a session with Daytrotter. Their cagey experimental garage rock surges to huge highs, then settles back down to a grungey ambivalence. The synesthetically-titled Colormusic did a session last year, as did Samantha Crain and the Midnight Shivers. The Uglysuit, Evangelicals, and Aqueduct all have sessions up from years past as well. They make quite a roundup of south central American sounds. If you're looking for a solid sampling of what Oklahoma rock sounds like, look no further than these Daytrotter-featured bands. Each session features an EP's worth of tracks for free with registration. Sign up and get listening.