Just like waltzes, nocturnes, scherzos and other genres Chopin wrote in, an impromptu is a specific type of musical composition. Put simply, an impromptu has a freestyle improvised sound. Impromptus are usually written for a solo instrument, and the genre came about in the Romantic era in the early s. The right hand is playing sixteenth notes and the left hand is playing eighth notes, which means the notes are only being pressed at the same time every third note. These themes are simply musical ideas that will recur throughout the piece. The notes have accents to tell the performer that these must be louder than the surrounding notes, which ends up being a lot of work for the thumb — but essential if the audience is to hear the melody.
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Fantasy-Impromptu [Op. The assumption arose that it was withheld on account of a stated similarity — unintentional, no doubt — to the Impromptu in E flat major by Ignaz Moscheles.
This work has the shape of a reprise miniature, like the reverse of a form which is frequent in the nocturnes. In an impromptu, the outer sections are dominated by increased movement, while the middle section brings a dreamy lull. This shape was already familiar to Schubert; Chopin took it up and employed it also in his three later impromptus, establishing the pattern in a way that was far-removed from all schematicism.
In his first impromptu, however, he could not avoid a certain schematicism. He did, though, offer a certain innovation in the area of texture. He had each of the hands play in a different metre: the right in duple time, the left in triple time. Hence the outer sections, adhering to an allegro agitato tempo, took on an almost etude-like appearance bars 5— The middle section brings music that is typical of the slow sections of nocturnes.
It proceeds at a moderato cantabile tempo, spinning out sotto voce a melody in D flat major, which returns a couple of times, as if unable to find a way out of the labyrinth.
The accompaniment, which runs in even triplets — converges with it or nonchalantly avoids it bars 43— In the hands of a master — as Huneker noted — it can be quite enchanting.
Fantaisie Impromptu sheet music for piano
Fantaisie-impromptu, Op.66 (Chopin, Frédéric)