Piano Concerto No. 10 (Mozart)

It is not known when Mozart completed his concerto for two pianos in E-flat major, K. 365/316a, but research by Alan Tyson shows that cadenzas for the first and third movements are written in his and his father's handwriting on a type of paper used between August 1775 and January 1777. However, most sources, including Alan Tyson's book "Mozart: Studies of the Autograph Scores" (1987) or more recent Lindeman's "The Concerto: A Research and Information Guide" (2006) indicate that it was composed in 1779. This date was retained on Wikipedia pages for K.365/316a in any other language. It is presumed that Mozart wrote it to play with his sister Maria Anna (“Nannerl”). Years later he performed it in a private concert with pupil Josepha Barbara von Auernhammer.

Concerto for two pianos
No. 10
by W. A. Mozart
Pianoforte by Johann Andreas Stein (Augsburg, 1775) – Berlin, Musikinstrumenten-Museum
KeyE-flat major
CatalogueK. 365
Composed1779 (1779)
MovementsThree (Allegro, Andante, Rondo, Allegro)
  • 2 pianos
  • orchestra

The concerto was originally scored for the two pianos together with two oboes, two bassoons; two horns; and strings. Mozart later expanded the score with pairs of clarinets, trumpets and timpani in E flat and B flat. However, the authenticity of the additions is not beyond question; they do not appear in the score. The piece is in three movements:

  1. Allegro, common time
  2. Andante, B-flat major 3/4
  3. Rondo: Allegro 2/4

The concerto departs from the usual solo piano concerto with the dialogue between the two pianos as they exchange musical ideas.[1] Mozart divides up the more striking passages quite evenly between the two pianos. Also, the orchestra is rather more quiet than in Mozart's other piano concertos, leaving much of the music to the soloists.

The first movement is lyrical and "wonderfully spacious, as if Mozart is thoroughly enjoying himself and letting his ideas flow freely," as Ledbetter has noted.[2] The middle movement is slow and refined; the orchestra stays in the background behind the pair of playful pianists. The finale is a rondo filled with rhythmic drive and, after passages of lyrical grace, there is an exuberant return to the main rondo theme.


  1. Huscher, Phillip. "Concerto for Two Pianos in E-flat Major, K. 365" (PDF). Chicago Symphony Orchestra. Retrieved 31 July 2015.
  2. Ledbetter, Steven (12 November 2006). "Program Notes: Mozart Triple-Double". Los Angeles Chamber Orchestra. Archived from the original on 8 February 2007.
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