Szymon Nehring肖邦练习曲 – Etude in A flat major Op. 25 No. 1 (th

youtube 转载：https://www.youtube.com/watch?v=Ob0AQLp3a5s 肖邦练习曲Op. 25 No. 1，youtube转载 Szymon Nehring肖邦练习曲 – Etude in A flat major Op. 25 No. 1 (th