Grey's Anatomy Music?

Last week was the first time I've watched Grey's Anatomy, I've been watching reruns on lifetime everyday and I am blown away by the music on their show. I know they play bands like Gomez, Tegan and Sara, Postal Service, The Ditty Bops, and I've seen the soundtracks on itunes but know theres more. If anyone knows anyother songs from Grey's that arn't on the soundtracks please let me know.