I like most of the ones that have already been posted.. So it's:
Jack Johnson, Amy Winehouse, Queen, The Killers, Alanis Morissette, Arctic Monkeys, Beatles, Calvin Harris, Dave Mathews, John Mayer, Jamiroquai, Guns n Roses, Bob Sinclare, James Blunt, Kate Nash, Lilly Allen, Oasis, Newton Faulkner, Robbie Williams, Patrick Wolf, Scissor Sisters, Take That, Aerosmith... and some hiphop..