:Batch file to run convert-ly :First open command window and change the directory to folder WORK AREA :cd "C:\Users\John\Music\Lilypond_Files\BagpipeMusic_L\Work_Area\" :Run Convert.bat with an argument e.g. test.ly ECHO ON set arg1=%1 cd """C:\Program Files (x86)\LilyPond_2.19.83\usr\bin\""" convert-ly -e """C:\Users\John\Music\Lilypond Files\BagpipeMusic_L\Work_Area\%1""" :End