Prince Harry was at the mercy of singer Josh Stone’s constant teasing during a rehearsal session for the Sentebale charity concert.

The royal prince visited Stone and the Basotho Youth Choir during their rehearsals on Monday. The Grammy award winner and the talented choir are one of the performers for Prince Harry’s charity Sentebale’s event on Tuesday at the Kensington Palace. Stone teased the 31-year old royal to join them in singing some of the songs, People magazine reported.

Prince Harry and Joss Stone Britain's Prince Harry stands next to singer Joss Stone during a group photograph with supporters in front of a 1960's Routemaster bus at Buckingham Palace, during a Royal British Legion Poppy Day event in London October 30, 2014. Photo: Reuters/Stefan Rousseau

Prince Harry reportedly blushed at the singer’s offer but refused to sing. Stone again re-issued the invitation to sing but the royal prince still declined the offer. He explained that singing was not his talent. "I learned years ago that I can’t sing,” he stated. Josh then teased if Prince William’s brother can do some break dance moves. However, he commented that he does not know how to do the said dance.

Stone is one of the ambassadors for the charity Sentebale. The singer and Prince Harry also watched the amazing performance from the Basotho Youth Choir during their rehearsals. The royal prince even had the chance to reunite with a young friend named Relebohile "Mutsu" Potsane that he met in his previous travels to Africa, according to the same report.

The young teen even gave Prince Harry a few gifts such as framed photographs of the children that Sentabale has helped, as well as a miniature model of a traditional hut. Prince Harry first met his young friend in 2004 when Mutsu was just 4-years-old. The second time that they met was when the royal prince opened a new African center for orphans in November 2015.

Meanwhile, some of the photos during the rehearsal session were also shared on social media through the Kensington Palace’s Twitter account. One picture featured the royal prince with members of the Basotho Youth Choir. Another image showed Prince Harry and Stone standing together as they watched the talented choir sing.

The said image was captioned, “Prince Harry and @Sentebale ambassador @JossStone stand back to enjoy the Basotho music, from the heart of Lesotho.”