Nashville music biologists struggle to find the origin point of the rich-kid punk nebula that encompasses bands like JEFF, the now-defunct Be Your Own Pet, Turbo Fruits and, eventually, Cheap Time—the groups have shared members, branched off and mutated so often that they've almost earned their own phylum. And until Cheap Time announced themselves with a self-titled, teeth-grindingly alive full-length this year, they barely registered as a missing link. Cheap Time sounds like it could have been recorded in the time it took the members to duck out of their fifth-period Advanced Punk History class. It's loud, taut and simple, shot through with the cockiness of brats who've never had to prove themselves outside their own schoolyard. Here's hoping they never graduate. —CODY DE VOS