Frédéric Chopin Nocturne in B-flat minor, Op. 9, No. 1

Описание: One of the better known nocturnes, this piece has a rhythmic freedom that came to characterize Chopin's later work. The left hand has an unbroken sequence of eighth notes in simple arpeggios throughout the entire piece, while the right hand moves with freedom, occasionally in patterns of seven, eleven, twenty, and twenty-two in the form of polyrhythms. The piece is 85 measures long and in 6
4 meter. It is written in ternary form; after the primary theme, the secondary theme starts in measure 19, followed by a modified version of the primary theme in measure 70.

The opening section moves into a contrasting middle section in the same key signature, which flows back to the opening material in a transitional passage where the melody floats above seventeen consecutive bars of D♭ major chords. The reprise of the first section grows out of this, ending with a Picardy third.

Frédéric Chopin wrote 21 nocturnes for solo piano between 1827 and 1846. They are generally considered among the finest short solo works for the instrument and hold an important place in contemporary concert repertoire. Although Chopin did not invent the nocturne, he popularized and expanded on it, building on the form developed by Irish composer John Field.

Chopin's nocturnes numbered 1 to 18 were published during his lifetime, in twos or threes, in the order of composition. However, numbers 19 and 20 were actually written first, prior to Chopin's departure from Poland, but published posthumously. Number 21 was not originally entitled "nocturne" at all, but since its publication in 1938 as such, it is generally included with publications and recordings of the set.
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