It was dank and damp at Custom House Square last night, but this year's Belsonic still kicked off in upbeat style with the artful dodger of electronic emission.
Skrillex — aka Sonny Moore to his mum and that annoyingly popular LA brat to his detractors — polarises opinion only slightly less effectively than Marmite.
A mere bedroom YouTube phenomenon just a few years ago, he now lays claim to Grammy awards and the adoration of anybody who appreciates loud, uncomplicated and exclamatory beats.
The dearly devoted of the Belfast populace all coincidentally happened to be about GCSE age, which accounted for the distinct whiff of teen spirit in the crowd last night.
The huge flashing back-end of a Star Wars ship and a giant digital clock marked the big countdown.
Like most transcendent teen phenomena, Skrillex seemed smaller and older in real life, but that might be because this reporter was extremely far away from the frontline action and everybody was so very young.
The dub-steppish, beat-laden, bleeping, farting and squelching that ensued was complemented by a stunning array of dry ice, lasers and even several small, flaming oil wells.
And the whole giddy shebang drove the crowd into paroxysms of group vex.
It'll be the turn of a more seasoned musical tribe come Madness on Friday, but the kids have already set a trailblazing pace.