It’s not exactly a shocking revelation to say that jazz can be a ludicrously self-reverential medium, especially given the insular virtuosity required to play it to a world-class degree, so it’s pleasant that tonight, under this starry-ceilinged festival marquee, that Courtney Pine maintains a balanced composure; one that allows for moments of wild, wandering timbres but also gentle interplay with Zoe Rahman’s fervent piano playing. A courteous guest, Pine lays on the thanks thick and fast for the Cathedral Quarter Arts Festival organisers, prompting agreement from a largely excitable crowd who rightly recognise that jazz in Belfast isn’t exactly the…