WATCH: Prince Harry sings on stage with Coldplay at charity concert
Prince Harry founded the charity ten years ago.
Coldplay headlined a charity concert held at Kensington Palace and Prince Harry joined them on stage.
During the show's finale Prince Harry grabbed a microphone saying, "I want to thank you so much, give yourselves a round of applause!"
Waving his arm from side to side he said "come on! Come on!"
Finishing off by saying to Coldplay, "you've rocked the Palace". He then joined in with the band's new song 'Up&Up along with a school choir and charity co-founder Prince Seeiso of Lesotho.
The concert, which also included singers Joss Stone and Laura Mvula, was the first pop concert to take place on the Palace's East Lawn, which features a statue of Queen Victoria in the grounds leading Prince Harry to jokingly apologise.
Commenting on the statue facing away from the stage he said, "I'm sure she would have been a massive Coldplay fan."
Prince Harry set up the charity Sentebale in 2006 after spending a gap year in the small African country of Lesotho. The charity aims to help the most vulnerable children in the country by giving them the support to lead healthy and productive lives.