Edward H. Plumb

Edward H. Plumb (June 6, 1907 – April 18, 1958) was a film composer and orchestrator best known for his work at Walt Disney Studios. He served as musical director of Fantasia and orchestrated and co-composed the score for Bambi, and orchestrated and expanded the film's main composer Frank Churchill's menacing but simple three-note theme.

[biography (excerpted) from Wikipedia]