John Williams is a great film scorer, but a horrible concert music composer. I don't think his name belongs with the likes of Penderecki, Carter, et al. This isn't a thread which asks who the best film composers are. I think that the best film composers, in my opinion, were from the era of Erich Wolfgang Korngold, Miklós Rózsa, Bernard Herrmann, etc. They are miles ahead of the likes of John Williams, Howard Shore, and others like that.