Скачать или смотреть Learn How to Play Big Rock Candy Mountain Folk Music on Piano

Visit my blog to get the free sheet music and midi files: http://wp.me/p2PKBN-cc
Big Rock Candy Mountain was written in the 1800s by Harry McClintock and is in the public domain.
The arrangement is mine, created by myself copyright 2015.
The software (Midi Sheet Music) is free and licensed under the GNU GPLv2.

To quote the applicable portion of the license:
Use of licensed software
Software under the GPL may be run for all purposes, including commercial purposes and even as a tool for creating proprietary software, for example when using GPL-licensed compilers.[35] Users or companies who distribute GPL-licensed works (e.g. software), may charge a fee for copies or give them free of charge. This distinguishes the GPL from shareware software licenses that allow copying for personal use but prohibit commercial distribution, or proprietary licenses where copying is prohibited by copyright law. The FSF argues that freedom-respecting free software should also not restrict commercial use and distribution (including redistribution)[34]: the GPL explicitly states that GPL works may be sold at any price.