The list of sidemen is fascinating: Along with [Lennon], of course, [Yoko Ono] was willingly backed by Eric Clapton, Mick Jagger, Ringo Starr, George Harrison (every Beatle but Paul, in fact), Frank Zappa, Sly & Robbie and Paul Shaffer, many of whom turned in rawer, more passionate work than you'll find on their own polished projects. And Ono's wit and compassion are acute throughout, her lyrics a vehicle for her ahead-of-her-time feminism and environmental concern, and revelatory of her interior state and marital life. Ono ranks right up there with her husband as a frank musical confessor.