Following the release of their most acclaimed album of their long career, Deep Politics (2011), Grails revisited Black Tar Prophecies, their ever-expanding, enigmatic tapestry of eclectic experiments released in scarce limited editions that often disappear before most fans discover their existence. Black Tar Prophecies Vol's 4, 5 & 6 collects three volumes in the Black Tar series, originally released as a limited-edition 12", and a split LP with Finish psych-rock phenoms, Pharaoh Overlord.