Frédéric Chopin's Fantaisie-Impromptu in C-sharp minor, Opus posthumous 66, is a solo piano composition and one of his most well-known pieces. It was composed in 1834 and dedicated to Julian Fontana. Some aspects of this piece are similar to the third movement of Beethoven's Moonlight Sonata. Two measures after the melody begins, an abrupt run and down has the exact same notes as the cadenza in the presto agitato of the moonlight sonata, movement...
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Frédéric Chopin's Fantaisie-Impromptu in C-sharp minor, Opus posthumous 66, is a solo piano composition and one of his most well-known pieces. It was composed in 1834 and dedicated to Julian Fontana. Some aspects of this piece are similar to the third movement of Beethoven's Moonlight Sonata. Two measures after the melody begins, an abrupt run and down has the exact same notes as the cadenza in the presto agitato of the moonlight sonata, movement 3. Also the tempo marking is identical to the famous third movement. The climax on a six-four chord is similar in both pieces. Fontana published the piece in spite of Chopin's request not to do so.
The piece uses many cross-rhythms (the right hand plays sixteenth notes against the left hand playing triplets) and a ceaselessly moving note figuration and is in cut time (2/2). The opening tempo is marked allegro agitato. The tempo changes to largo and later moderato cantabile when the key changes to D-flat major, the enharmonic equivalent of the...
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