In July, 52 entrants made beautiful music at Tube stations across London. A combination of public votes and a judging panel aims to whittle these down to a final 10 who will perform at a live busk-off on 17 September as part of Boris Johnson's Young People's Question Time. Disappointingly, none of them are singing 'Going Underground', the original version or the Amateur Transplants' spoof (though this would probably be construed as biting the hand that feeds).
Famous former buskers include Tracy Chapman, The Violent Femmes and Barenaked Ladies. Even rock veterans Eric Clapton and Bon Jovi have used street performance as a way of reaching audiences while the likes of James Morrison, Fran Healy and Badly Drawn Boy still take an occasional turn putting on shows for passersby.
Fancy your chances busking on the underground? Check out TfL's website for more details on licences and booking pitches.
To see the video clips and vote for your favourite, see the Busking Underground website. Have you got a favourite busker on the underground? Tell us about them.
