#? Instruments #?

          sketch1-2.midi           sketch1-2.pdf           sketch1-2-sheet.pdf
              Refer files;    sketch1-2.ly     sketch1-2-sheet.latex     run--multiple.cmd      run--multiple.sh
              Actual files Download; sketch1-2.tar.gz ( About; 18,000bytes )
       Windows (cmd)>run--multiple sketch1-2[Enter]      Linux (bash)$ ./run--multiple.sh sketch1-2[Enter]

This sounds "sketch1-2.mp3".