musicians to play to the back of the hall. in the '70s that distance between the performer on stage and that audience grew. if you went to any big arena rock shows, it was always about the star up here and the audience down here. and this sort of, iconography of the rock star as this huge figure. ♪ crazy crazy on you >> it was bound to happen, but it comes as a shock, nevertheless. in a poll taken by a leading pop music magazine in england, the beatles came in second. the most popular rock group in england these days is called the led zeppelin. >> in their 20s, they're rich, powerful, temperamental, and pampered. they're the led zeppelin, a rock group on tour, and in the vernacular of the record business, where to be big is