<Li> Tim Rice - Oxley (Keane) </Li> <Li> Shaznay Lewis (All Saints) </Li> <Li> Róisín Murphy (Moloko) </Li> <Ul> <Li> Snow Patrol </Li> <Li> Rachel Stevens </Li> <Li> Joss Stone </Li> <Li> Sugababes </Li> <Li> The Thrills </Li> <Li> Turin Brakes </Li> <Li> Robbie Williams--performed separately from a studio in Los Angeles </Li> <Li> Will Young </Li> <Li> Fran Healy (Travis) </Li> </Ul>

Who sings the first line in do they know it's christmas