Girl Singer is that rarity, an entertainer's autobiography that sidesteps the usual cash-in maneuvers, instead earning the label of memoir. Rosemary Clooney, of course, is the 1950s pop sweetheart ("Come On-a My House," a song she detested) turned 1960s nervous-breakdown casualty and, finally, comeback kid with a well-loved interpretive style. She recalls a hectic childhood spent mostly under the wing of her grandmother, who was better equipped than her parents to raise Rosemary, sister Betty, and brother Nick.