Does Robbie Williams write his songs himself?

Kind of. Guy Chambers, his co writer, stated that he alone (guy chambers) wrote all of the music for their collaborations. He stated that Williams only wrote lyrics. In truth, Williams has never written a song by himself, and always has a "co writer". Common sense dictates that this co writer writes all of the music, and he adds lyrics. Often record labels will put their stars in with their own song writers, to make them more respected as musicians. From what I've read, Williams, with his songs, has done little more than write lyrics, and chip in with a few ideas/changes