Picture - Adam Clayton, David Letterman and The Late Show With David Letterman

"I really just wanna say, it should really be about the music; it should be about the craft that I'm making... This is not a gimmick; I'm an artist and I should be taken seriously and all this other bull should not be spoken of." Accepting a trophy at the Billboard Music Awards, JUSTIN BIEBER urges critics to focus on the positives in his career instead of his offstage antics. The singer has had a series of dramas while on tour, including a clash with a paparazzo in London and a tour bus raid by police in Sweden.