From www.mutopiaproject.org

Étude Op. 10, No. 5 in G♭ major is a study for solo piano composed by Frédéric Chopin in 1830. It was first published in 1833 in France, Germany, and England as the fifth piece of his Études Op. 10. This work is characterized by the rapid triplet figuration played by the right hand exclusively on black keys, except for one note. This melodic figuration is accompanied by the left hand in staccato chords and octaves.
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