Coheed and Cambria produces more than just complicated prog-rock. Its members aren't merely musical geeks, either. They are epic musical geeks. And the strange fruit of their conceptual labor is simply good, though hardly simple, music. The band's songs thematically follow the adventures of two fictional characters (yup, Coheed and Cambria) in a post-apocalyptic world. Think comic books. (No, really. They've created those, too.) But it's no mere gimmick. C&C mastermind Claudio Sanchez boasts a freakish falsetto, and the music is strong and confident. The melodies manage somehow to be simultaneously unexpected and wildly catchy. The group's latest album, In Keeping Secrets of Silent Earth: 3, represents one installment of a four-part concept, but whereas concept albums aren't generally well-regarded, C&C backs its elaborate story with music you actually want to hear.