Prince Harry treated the audience at London's Victoria Palace theatre to a few seconds of singing on Wednesday evening. Harry and his wife, Megan Markle, were attending a charity performance of the hit musical 'Hamilton'. The couple attended the event to raise funds for a charity that works on issues affecting children and young people with HIV in southern Africa. Prince Harry founded the charity, Sentebale, with Prince Seeiso of Lesotho in 2006. After the show, Harry and Markle met the cast and crew of 'Hamilton' backstage.