Occasionally bands played live, examples in the 1970s and 1980s being the Four Seasons, the Who, Blondie, John Otway, Sham 69, Eddie and the Hot Rods, Jimmy James and the Vagabonds, The Sweet, The Jackson 5, Heavy Metal Kids, Elton John, Typically Tropical, New Order, Whitney Houston and David Bowie. In 1980, heavy metal band Iron Maiden played live on the show when they refused to mime to their single "Running Free". Solo artists and vocal groups were supposed to sing live to the Top of the Pops Orchestra. Billy Ocean, Brotherhood of Man, Anita Ward, Thelma Houston, Deniece Williams, Hylda Baker and the Nolans all performed in this way.