On these albums
Dubbing With the ObserverThe Observer All Stars & King Tubby · 1975
King Tubby’s Special 1973–1976King Tubby, The Observer and The Aggrovators · 1989
Trojan Dub Box Set, Volume 2Various Artists · 2000
Essential Dub: Ruff Cuts & Hard Riddims From the MixmasterKing Tubby · 2000
At King Tubby's: Dub Plate Specials 1973-1975Niney the Observer · 2002
Evolution of Dub, Volume 1: The Origin of the SpeciesVarious Artists · 2009
Source: MusicBrainz recording 576bfcf1-26fe-455d-916c-15f646bc72b5 (CC0).