If it's a play on primal (not sure why the capitalisation), then it might refer to original, first, earliest etc --which could mean anything. Some sort of early material? What you might guess, if "primal" is some sort of clue. Unlikely though.
A demo recording of Gangland was found on an old tape Adrian still possessed. To everyone's surprise, it's better than the original. In 45 minutes we'll see a video in which H will present this rare possession, together with good ol' Clive Burr.