Piano Concerto no. 20 in D minor, K. 466

Entered in Mozart's catalogue on 10 February 1785 and performed the following evening at the Mehlgrube in Vienna, with the copyist still finishing the parts; Leopold Mozart, newly arrived on a visit, described the occasion in a letter to his daughter. It is the first of only two Mozart concertos in a minor key, and the only one whose orchestral opening withholds the soloist for so long over a shifting, syncopated bass. Mozart left no cadenzas for it; the ones most often played are Beethoven's, written some fifteen years later.