OpenBSD
OpenBSD is a Free operating system (under the BSD license), a song is produced to celebrate each new release.
The songs themselves, lyrics and "cover art" (if you can call it that) are all available freely from OpenBSD's Release Songs site.
OpenBSD on Last.fm.
User-contributed text is available under the Creative Commons By-SA License and may also be available under the GNU FDL.
OpenBSD lyrics
Search Tips
To achieve high accuracy, enter the name of the song + artist names when searching.
If you want to search for songs by artist. Just enter the name Singer to search.
If you want to search for songs by two singers and shows, enter:
Singer 1 ft. Singer 2 to search.