Welles lost control of the editing of "The Magnificent Ambersons" to RKO, and the final version released to audiences differed significantly from his rough cut of the film. More than an hour of footage was cut by the studio, which also shot and substituted a happier ending. Although Welles's extensive notes for how he wished the film to be cut have survived, the excised footage was destroyed. Composer Bernard Herrmann insisted his credit be removed when, like the film itself, his score was heavily edited by the studio.