Oh! My Son! My Son!

          sketch2.midi           sketch2.pdf           sketch2-sheet.pdf           sketch2.mp3
              Refer files;    sketch2.ly     sketch2-sheet.latex     run--lily.cmd      run--lily.sh
              Actual files Download; sketch2.tar.gz ( About; 31,250bytes )
       Windows (cmd)>run--lily sketch2[Enter]      Linux (bash)$ ./run--lily.sh sketch2[Enter]

This sounds "sketch2.mp3".