The Big Brother UK TV Theme, also known as "Elementfour" in Belgium or as "Tast-E" in Australia and Greece, is the opening theme for the British reality TV series Big Brother, written and produced by music duo Elementfour in 2000. In July 2016, it was revealed that the track was the 14th highest-charting TV theme of all time in the UK. In June 2020 it was announced the song had sold 164,000 CD singles in the twenty years since its release, with no additional downloads or streaming sales due to it not being available digitally.