A non-stop musical show featuring the world's top disco artists, recorded inside the BBC1 Big Top and on the ski slopes at Leysin in the Swiss Alps. starring and introduced by Boney M and Leo Sayer From the USA: The Jacksons, Curtis Mayfield Leif Garrett , Amii Stewart From the UK: Bonnie Tyler From Canada: The Raes, Rozalind Keene From Switzerland: Patrick Juvet From Germany: Eruption