A handwritten manuscript page of Mozart's Serenade in D major for orchestra will auction at Profiles in History in Los Angeles on December 17.
It's estimated to make $200,000-300,000.
The piece is thought to have been composed for the graduation of a friend, Judas Thaddaus van Antretter, from Salzburg in 1773.
PIH comments: "Preceded by the processional march K.189, the serenade would have been performed twice, once in front of the Mirabell Palace, the Archbishop's summer residence in Salzburg, and again on the other side of the river, on the former Kollegienplatz in front of the assembled professors and students."
Mozart returned to Salzburg in 1773 after 10 years spent performing across Europe. He was employed as a court musician there for several years, but grew bored with the lack of opportunities available to him and resigned in 1777.
An archive of letters by Mozart sold for $568,000 at Sotheby's in 2012.
Two handwritten manuscripts by Franz Schubert for Tischlerlied (Carpenter's Song) and Totenkranz fur ein Kind (Wreath for a Dead Child) are valued at $100,000-150,000.
The songs were not published until the mid to late 1800s, long after Schubert's death.
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