[The answer: d) All of the above. That is, the four-piece band fronted by Afro'd auteur Claudio Sanchez is a progressive rock band that delivers a grandiose, multipart sci-fi storyline with metallic force and the keen emotionalism of heart-on-sleeve emo acts. The major-label debut by the California band is the third in a continuing saga about a dystopian future in which the parents must kill their children to stamp out a plague. (The curious can check out the Sanchez-scripted comic books, available at www.coheedandcambria.com.) If that's not dark enough for you, there's a snazzy guillotine on the CD sleeve and song titles that include] Ten Speed (Of God's Blood and Burial). ... Once Upon Your Dead Body.