Tyler Joseph, wearing black lace-up boots, a camouflage jacket and a full-face balaclava, is standing on Spark Arena's main stage, playing piano with a black sheet draped over him.
At the end of Fairly Local, an epic synth-rocker pummelling a stadium rammed with kids who'd dragged their mums and dads out for the night, Joseph collapses to the ground as the sheet billows on to the floor.
In the blink of an eye he reappears 100m away in the middle of the arena's upper deck, a spotlight shining directly in his eyes as he rips off his balaclava for the big reveal.
It's a magic trick, and a very good one. Twenty One Pilots, the genre-mashing Ohio duo featuring Joseph and the muscular drumming talents of Josh Dun, obviously think it's good too - they did exactly the same thing when they were last here.
That wasn't the only thing that seemed eerily familiar to anyone who saw them play the same venue 18 months ago: They covered the same Elvis Presley song, Can't Help Falling in Love; they ended their main set and encore with the same songs, Car Radio and Trees; and they repeated many of the same tricks , including Joseph's performance on a rising platform at the other end of the stadium, and Dun hitting the skins while balanced precariously on a platform being held up by the front rows.