 By 1971, the group, now called Exit, consisted of a band of anything up to 12 players with twice that number of artists and filmmakers available to create "happenings" of circus-like proportions.Exit operated pretty much as a "guerrilla outfit", sometimes turning up to play at venues unannounced, but sometimes following more formal lines.Of the latter, ICES 72, a massive festival of the avant-garde based in London's Roundhouse was probably the most notable.