Nocturne
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A nocturne is a piece of music, usually for piano, which suggests the night (“nocturnal” means “of the night”). The Irish composer John Field was the first person to make nocturnes popular. He was inspired by the slow, gentle tunes of Italian operas of his time (early 19th century). His nocturnes are mostly tunes with many long notes in the right hand over an accompaniment of arpeggio-like figures in the left hand.
Soon the great composer Frédéric Chopin was writing nocturnes. These are some of the most famous nocturnes ever written.
Later composers who were famous for their nocturnes include Gabriel Fauré and Alexander Scriabin.