Chopin Etude Op.10, No. 4: Graph of semiquaver motif, bars 1 - 4, 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>
2011-01-16
<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. 101 (copyright expired)