The Piano Concerto no. 20 in D minor, K. 466, was written and premiered by Wolfgang Amadeus Mozart in 1785. The young Ludwig van Beethoven admired this concerto and kept it in his repertoire. A bass run from the first movement appears for comic effect in Variation 22 of the Diabelli Variations. Daniel Barenboim contends that this concerto was Joseph Stalin's favorite piece of music. Composers who wrote cadenzas for it include Beethoven (WoO 58), Charles-Valentin Alkan, Johannes Brahms (WoO 16), Johann Nepomuk Hummel, Feruccio Busoni and Clara Schumann. The concerto is scored for solo piano, flute, two oboes, two bassoons, two horns, two trumpets, timpani and strings. As is typical with concertos, it is in three movements.
