39. Two Preludes through all the major and minor keys, for piano or organ; composed 1789.
40. Romance for violin and orchestra, in G major; composed 1802 (?).
41. Serenade for piano and flute (or violin), in D major; from Opus 5. Published 1803.
42. Notturno for piano and violoncello, in D major (from Op. 8); published 1804.
43. Ballet, "The Men of Prometheus"; composed 1800.
44. Fourteen Variations for piano, violin, and violoncello, on an original theme; composed 1802 (?).
45. Three Marches for piano, for four hands, in C major, E flat major, and D major; dedicated to the Princess Esterhazy; composed 1802 (1801?).
46. Adelaïde, words by Matthison; composed 1796.
47. Sonata for piano and violin, in A major; dedicated to the violinist, Rudolph Kreutzer; composed 1803.
48. Six spiritual songs, by Gellert; published 1803.