George Michael covers the 1974 Elton John's hit "Don't Let the Sun Go Down on Me" at Wembley Stadium, with Elton John himself as surprise guest to sing a duet.George Michael covers the 1974 Elton John's hit "Don't Let the Sun Go Down on Me" at Wembley Stadium, with Elton John himself as surprise guest to sing a duet.George Michael covers the 1974 Elton John's hit "Don't Let the Sun Go Down on Me" at Wembley Stadium, with Elton John himself as surprise guest to sing a duet.