Wolfgang Amadeus Mozart's Piano Concerto No. 9 in E♭ major, K. 271, known as the Jeunehomme or Jenamy concerto was written in Salzburg in 1777 when the composer was 21 years old.
1777 portrait of Mozart with the Order of the Golden Spur
Köchel catalogue
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The Köchel catalogue is a catalogue of compositions by Wolfgang Amadeus Mozart, originally created by Ludwig Ritter von Köchel, in which the entries are abbreviated K. or KV. Its numbers reflect the o
Köchel-Verzeichnis, published 1975 in East Germany
