some must certainly have been composed earlier; then follow:—
C minor, composed October 14, 1784 (457 K.), with the fantasia (475 K.) published in 1785 as Op. 11.
F major, composed January 3, 1788, in two movements (533 K.).
"A Short Pianoforte Sonata for Beginners," in C major (545 K.), composed June, 1788.
B flat major, "for pianoforte alone," composed February, 1789 (570 K.).
B flat major (D major—DW) composed July, 1789 (576 K.).
Most, if not all, of these appear to have been composed for special occasions. The most important is unquestionably the celebrated one in C minor, the fire and passion of which, especially in the last movement, surpass all previous efforts, and point to what Beethoven was to achieve in the piano-forte sonata. The second, in B flat major, is pleasing and gay; the working out of the first movement is free and full. The third, in D major, is easy and cheerful, with more passages than usual.
Three four-handed sonatas[ 29 ] are also preserved:—
D major, composed November, 1781, for Aurnhammer's Soirée (381 K.).
F major, composed August 1,1786 (497 K.).