It takes a great deal of skill or charm – or a combination of the two – to silence a room. And yet this evening Belfast, so often plagued by inconsiderate gig-talkers, sees this filled-to-capacity venue fall under the thrall of a reverend quiet for both support act and main draw and remains submerged in that snow for the entire duration of the gig. It is a wonderfully unnerving experience to be somewhere so hushed that you can hear the person next to you breathing or respectfully supping at their pint but it is testament to not only the calibre…