To some listeners, Ruben Guevara (sometimes referred to as Ruben de Guevara) is most important as the man behind Ruben & the Jets, the real group that followed in the wake of the 1968 Frank Zappa album Cruising with Ruben & the Jets and left behind two of the finest rock & roll albums of the early to mid-'70s. But Guevara is more than that -- indeed, he is a multi-threat musician, performer, writer, and producer, for whom Ruben & the Jets are but one small musical achievement in a nearly five-decade career. He was born in California, the son of a Mexican immigrant musician and...