Trelawney

"I wasn't expecting this two days ago," Besembaiev told BBC Radio 3's Petroc Trelawney immediately after the concert, but added it was "really thrilling and really great to be here".

"The point with the Proms is it is the most accessible of all arts festivals," says BBC Radio 3's Petroc Trelawney, who is hosting many of this year's concerts.

"I don't think classical music can operate in a vacuum," says Trelawney.

Officers opened a murder inquiry after the 18-year-old was found hurt near shops in Trelawney Avenue, Slough, at about 19:15 BST on Thursday.

Thames Valley Police appealed for any witnesses to the stabbing outside the Trelawney Avenue shops in Langley, or anyone with any other information, to come forward.