The Richest Songs in the World, 9pm, BBC4
Mark Radcliffe presents a countdown of the ten songs that have earned the most money of all time along with the stories behind them. Plus, the presenter explains how music royalties work and reveals the biggest winners and
losers in the history of popular music. Celebrity Mastermind (BBC1, 7pm) John Humphrys hosts as DJ Bobby Friction, Coast presenter Alice Roberts, actor Ewen Macintosh (The Office) and comedian Simon Evans answer questions on their specialist subjects the life and work of Prince, the Moomin novels of Tove Jansson, the TV series Twin Peaks and Shackleton's Endurance expedition.