The members of Tiger Beat (I remember reading Tiger Beat magazine when I was a teen!) are all YA (Young Adult) authors, and they apparently rocked the house at Books of Wonder during a Sourcebooks launch party. From Mediabistro:
Libba Bray wailed on vocals, Daniel Ehrenhaft played guitar, Natalie Standiford played bass, and Barney Miller handled drums. The band headlined the launch party for Sourcebooks Fire, the publisher's brand new YA imprint. GalleyCat missed the party, but Sourcebooks passed along the excellent video.
Too bad the sound isn't clear enough to hear all the lyrics. I'll have to check to see if any of the band members have posted the lyrics online.