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The score was Prokofiev's third for a film, following "Lieutenant Kijé" (1934) and "The Queen of Spades" (1936). Prokofiev was heavily involved not just with the composition, but with the recording as well. He experimented with different microphone distances in order to achieve the desired sound. Horns meant to represent the Teutonic Knights, for instance, were played close enough to the microphones to produce a crackling, distorted sound. The brass and choral groups were recorded in different studios and the separate pieces were later mixed.