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One of the most notable aspects of "A Day in the Life" lies in its innovative orchestral arrangement. At the time, the Beatles were increasingly interested in avant-garde music, which heavily influenced this recording.
The orchestral sections were recorded in an unconventional method. Producer George Martin conceptualized a way for musicians to start at the lowest note their instrument could play and gradually work their way up. While this proved challenging for orchestras, Martin established a looser structure that allowed for creative improvisation.