WATCH: "God Only Knows" by BBC Music

To mark the launch of BBC Music, all of BBC's television, radio and online networks premiered the track and video for a reworking of the Beach Boys' "God Only Knows." 

It features a whole heap of stars including Dave Grohl, Lorde, Pharrell Williams, Sam Smith, Paloma Faith, Chris Martin, Stevie Wonder, Florence Welch, Kylie Minogue, Chrissie Hynde, One Direction, Emeli Sandé, Elton John and Brian May.