Korngold called his film scores “Opern ohne Singen,” operas without singing, but otherwise approached their composition just as he would for the operatic stage. “The Adventures of Robin Hood” was, therefore, a large-scale symphonic work and, despite the studio music department’s providing a team of orchestrators, including future Oscar-winner Hugo Friedhofer, to assist Korngold, the amount of work was immense, especially for the limited time he was given to compose. In describing this dilemma to his father, Julius Korngold, one of Vienna’s foremost music critics, the elder Korngold suggested that themes from his 1920 symphonic overture “Sursum Corda” (“Lift Up Your Hearts”) would serve splendidly for much of the most demanding action-scene music, and Erich agreed.