Twinkling with festive spirit this stage show is now celebrating 20 consecutive years at the peacockbased upon the book by raymond briggs and the film directed by dianne jackson and produced by john coates which has transported a generation of children and their families into the wintery world of a boy and his magical snowman with music and lyrics by howard blake including walking in the air performed by a live orchestra design by ruari murchison and lighting by tim mitchell the snowman