Britain's Prince Harry made a surprise visit to a children's choir rehearsal yesterday (27.06.16).

Prince Harry's surprise visit

Prince Harry's surprise visit

The Basotho Youth Choir are preparing to perform at the Sentebale charity concert - which has been organised by the 27-year-old royal - at Kensington Palace tonight (28.06.16) and Harry stunned them all as he turned up to a practice session.

He was joined at the Brit School in London by singer Joss Stone, who teased Harry about joining in.

After listening to a few songs, Joss joked: "There's your note, Harry!"

But he quickly turned down her offer, saying: "I learned years ago that I can't sing."

During the rehearsals, Harry was reunited with Relebohile "Mutsu" Potsane, who he first met in Lesotho in 2004.

Harry and Mutsu, who was just four at the time, struck up an instant rapport when Harry visited the tiny African kingdom when he was a 19-year-old gap year student and the pair stayed in touch.

The prince asked him: "How are you? Are you well? Have you guys been having fun? London's been looking after you."

They met up in November and yesterday was Mutsu's first trip to London.

Mutsu, now 16, travelled to the UK with a choir of five other boys and six girls, all helped by Harry's Sentebale charity, to perform in a special fundraising concert, which will be headlined by Coldplay.

Harry founded Sentebale along with Lesotho's Prince Seeiso, to help children affected by HIV and AIDS. Joss is an ambassador for the organisation and will lead the children in song at the concert.