Chopin Etude Op. 10, No 6: graphic sketch of middle section (bars 17 - 41) after Hugo Leichtentritt
<a href="//commons.wikimedia.org/w/index.php?title=User:Rolf-Peter_Wille&amp;action=edit&amp;redlink=1" class="new" title="User:Rolf-Peter Wille (page does not exist)">Rolf-Peter Wille</a>
2011-01-29
<span class="int-own-work" lang="en">Own work</span>, based on a sketch in Hugo Leichtentritt. <i>Analyse der Chopin’schen Klavierwerke</i> [Analysis of Chopin’s Piano Works]. Band II. Berlin: Max Hesses Verlag, 1922, p. 117 (copyright expired)