For the final instalment of ‘In the Court of Tom Ravenscroft’, the eclectically curated mini-festival at The MAC,  we are being treated to a somewhat canonical foray into the tastes of a man who, like his father before him, has ample time for exploring the realms of music that’s slightly further away from left of the field. Approaching the venue from the courtyard at around 8.30, a surprising mix of young, fresh faces and Cathedral Quarter veterans mingle around the box office and bar area, debating and discussing topics that will ultimately become fond memories of the evening; the mightiest…