Young musicians from Harrow will battle it out with other singers and performers in a London-wide competition.
The five artists are taking part in the Gigs Big Busk contest organised by the Mayor of London to give musicians from the age of 11 to 25 the chance to play live.
The Harrow singers are among 200 acts who will be performing at 20 high-profile busking spots for Londoners to enjoy until Sunday August 31.
Between now and then members of the public are invited to vote online for their favourite acts, with the winners getting a coveted licence to busk on the Tube, courtesy of Transport for London.
People are able to view the performances from each of the artists taking part and vote by clicking here.