This has been played on radio and podcasts worldwide and is fast becoming the definitive version!

The Free Software Song is a filk song by GNU/EMACS guru Richard M. Stallman. The song is usually set to the traditional Bulgarian melody of "Sadi Moma" but PST developed their own tune instead inna reverse-engineer stylee. This version has Chris Hughes (of Berlin's Methylated Spirits) on second git - except the solo which is by Sehguh Sirhc.