Chopin-Brahms - Etude Op. 25 No. 2 (audio + sheet music)

Etude after Frederic Chopin's Etude Op. 25 No. 2, from "5 Studies" Anh. 1a/1, by German composer Johannes Brahms (1833-1897). (year of piece mentioned first published April 1869)
Please take note once again that the audio AND the sheet music are NOT mine. Change the quality to 480p if the video is blurry.
Performance by: Idil Biret (piano)
(original audio: • Biret plays Brahms Stu... )