This is the LilyPond engraving source file used to create the Chopin Fantaisie-Impromptu, opus 66.
(I highly recommend the Frescobaldi IDE for LilyPond. It makes all of the following much easier.)
The PDF and MIDI files can be created by issuing the following command in the directory this file is in (assuming you have lilypond in your PATH variable):
lilypond impromptu-op66.ly
To create a smaller PDF, try:
lilypond -dno-point-and-click impromptu-op66.ly
You may also download the latest release here to get the compiled PDF and MIDI files.
impromptu-op66.ly is set up so that you can print it on two sides of the paper and leave an extra margin amount on the inside pages for binding. If you don't want this, find the \paper block (near the bottom) and set two-sided = ##f.
This work is licensed under the Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) from Creative Commons. Follow the link for details. Basically, you can use this work however you want if you keep the same license and you attribute the work to me, Knute Snortum (knute (at) snortum (dot) net).