Among the many gems here are Lee K. Abbott's wild portrait of a delusional, megalomaniacal rock star on his comeback; T. Coraghessan Boyle's wryly comic depiction of a recently deceased guitarist trying to find his way to "rock and roll heaven"; Kathleen Warnock's wistful tale of a schoolteacher in the 1980s who meets the real Elvis; Janice Eidus's hip romance between a fifties doo-wop singer and his high-school sweetheart; Lucinda Ebersole's fine riff on Kafka's Metamorphosis, in which a "nineties guy" named Sammy wakes up one morni