Desc: Climbed Every Mountain: The Story Behind the Sound of Music: Directed by Christopher Walker. With Nicholas Hammond, Sue Perkins, Peter Husty, Elizabeth Campbell Peters. The Sound of Music is one of the most enduring popular films ever made, yet behind it lies an even more astonishing family story. Sue Perkins travels to Salzburg, Ellis Island and Vermont to discover how the family made a living in America as the Trapp Family Singers.