From www.mutopiaproject.org

The Symphony No. 25 in G minor, K. 183/173dB, was written by the then 17-year-old Wolfgang Amadeus Mozart in October 1773, shortly after the success of his opera seria Lucio Silla. It was supposedly completed in Salzburg on October 5, a mere two days after the completion of his Symphony No. 24, although this remains unsubstantiated. Its first movement is widely known as the opening music in Miloš Forman's film Amadeus.
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