17 April 2014 Last updated at 16:14 GMT

Andy Murray and stars sing their favourite BBC Sport theme tune

Watch Andy Murray, Steve Davis, Murray Walker, Johnny Vegas, Hazel Irvine and Gareth Edwards hum along to their favourite BBC Sport theme tune.

They have joined Sue Barker to celebrate '50 Golden Years of Sport on BBC Two'. The documentary reveals the origins of sport on BBC Two, including the creation of Match of the Day in 1964 and other iconic brands like Ski Sunday and Pot Black.

It also relives many of the channel's greatest sporting moments, including the 1985 World Snooker Championship final, which was watched by a record-breaking 18.5 million viewers in the early hours of the morning; Botham's Ashes in 1981; Usain Bolt's 100m world record and many of the highlights of the Winter Olympics.

Watch '50 Golden Years of Sport on BBC Two', Sunday 20 April, 20:00 BST on BBC Two, BBC Two HD and the BBC Sport website.