16. Twenty-seven quartetts for strings, two for strings with flute, and one for strings with oboe.
17. One trio and three duets for strings.
18. Twenty-seven pianoforte concertos, including one for two and another for three pianos; also two rondos for piano and orchestra.
19. A quintett for piano and wind instruments; two quartetts and seven trios for piano and strings, and one trio for piano, clarinet, and viola.
20. Forty-three sonatas, and two sets of variations for piano and violin.
21. A fugue and a sonata for two pianos; five sonatas and a set of variations for piano duet.
22. Seventeen sonatas for piano solo.
23. Four fantasias, fifteen sets of variations, and twenty various pieces for piano solo.
24. Seventeen sonatas for organ, with other instruments, written for Salzburg.
In addition to the above works, Kochel's catalogue gives a list of ninety-eight works which Mozart began, but, for some unknown reason, never completed.