The album was released by their former American label, Capitol Records, to compete with their then-current album The Final Cut. The main interest for collectors is the track "Embryo", an outtake from Ummagumma that later became a concert staple in a greatly elongated form, which originally only appeared in January 1970 on a scarce various artists compilation album promoting Pink Floyd's UK label Harvest Records entitled Picnic – A Breath of Fresh Air. Also unique to Works, the tracks "Brain Damage" and "Eclipse" are presented as alternate versions, possibly stereo mixes from the master tapes of the quadraphonic edition of The Dark Side of the Moon.
"Brain Damage" and "Eclipse" both have alternate mixes. Changes to these include different cut times between the two songs as well as the audience heard at the end of "Fearless"/ beginning of "Brain Damage". Another change is that some of the spoken parts from the tracks are at different volumes — the primary reason for this is that the versions featured here are stereo folddowns of the quadraphonic mix.
Some other tracks are present in alternate "crossfade" mixes, most notably on the segues between "See Emily Play" / "Several Species of Small Furry Animals" and "Fearless" / "Brain Damage".