A history of American pop vocal groups, encompassing the doo wop of Dion and the Belmonts, the Motown hits of the Supremes, the surf sound of the Beach Boys, and the country rock sound of Crosby Stills and Nash. Singing groups helped shape today's pop music, and this book tells the story of more than 350 classic acts spanning more than five decades. Each entry is packed with facts - many never before published - about the group's career, key members, and musical impact. This reference work also contains extensive discographies and rare photographs.