Leading lights from the worlds of sport, business and politics team up with famous musical stars to perform daring duets in front of a live studio audience and a panel of three music industry experts. The pros don't have long to teach their new partners the tricks of the trade, so there is pressure aplenty as showtime draws near. Will they be champagne and caviar or chalk and cheese? Through six qualifying rounds only nine couples can make the semi-finals, with the judges and audience sharing the votes 50/50. In a nerve-shredding finale, which couple will deliver the dream duet?