From HandWiki - Reading time: 3 min
| "Free Software Song" | |
|---|---|
| Single by Richard M. Stallman | |
| Released | Script error: No such module "Date time". |
| Genre | Filk, folk |
| Length | Script error: No such module "hms". |
| Songwriter(s) | Richard M. Stallman |

The Free Software Song is a filk song by Richard M. Stallman about free software. The song is set to the melody of the Bulgarian "Sadi Moma".
A version of this song is also performed by a band (the GNU/Stallmans) during the credits of the documentary Revolution OS. In 1998, Matt Loper recorded a techno version of the song.[1] Jono Bacon also recorded a heavy metal version of the song,[2] and the band Fenster recorded a rhythmic version.[3] In addition, there is a Spanish pop punk version recorded by ALEC,[4][5] and a Rick Astley mashup, "Never Gonna Give GNU Up".[6]
A version is used in the free software karaoke video game Sinatra.[7]
The lyrics have been placed in the public domain.[3]
<score sound="1"> \relative c' {\key g \major \time 7/8 \tempo 8 = 210 d'4 c8 b4 a4 b4 c8 b8[( a)] g4 g4. a4. ( b8) c4. b4 \grace b8 d4 a4. a2 d4 ( c8 b2) d4 c8 b4 a4 b4 c8 b8[( a)] g4 g4. a4. ( b8) c4. b4 \grace b8 d4 a4. a2 a4. ~ a2 \bar "|." } </score>