Differences between international releases. the recording of Chill Out and the other sound of Mu, covering the early Brilliant releases as well as the K Foundation and the One World Orchestra.
The bootleg UK CD version of 1987 (‘What the : is going on?’ KLFCD007 with the orange/white cover) plays as 3 tracks. The first two of which are made up of the tracks which were on either side of the original 1987 release.
However, track 3, the bonus tracks that are listed in the discography actually play as a live performance by firstly, american (?)-metal band Big Black and then another similar band called Rifle Sport do a few tracks. The origin of this session is unknown.