Princes William and Harry say they are planning a pop concert and memorial service next year to mark the 46th birthday of their mother, Princess Diana, and the 10th anniversary of her death. The concert will feature some of Diana?s favorite music and will be ?full of energy, full of the sort of fun and happiness which I know she would have wanted,? William said. The band Duran Duran will perform along with Elton John, who sang Candle in the Wind at Diana?s funeral. The concert also will include a performance by the English National Ballet and songs by Andrew Lloyd Webber in honor of the princess? love of dancing and theater. The concert is planned for July 1, on Diana?s 46th birthday, at Wembley Stadium in London. Money raised from the concert will go to charities the princess supported. A memorial service also is planned at an undisclosed location in London on August 31, 10 years after the princess? fatal car crash in a Paris tunnel. Diana died with her friend Dodi Fayed and their driver when their Mercedes crashed inside the Pont d?Alma tunnel as media photographers pursued them.