Why wait until for the encore for a confetti downpour when you can lead with one?

That’s what Canadian rockers Arcade Fire did Sunday night at Chaifetz Arena during the local stop of its “Reflektor” tour, an incredible two-hour blowout that will easily go down as one of the year’s concert highlights.

You’ve seen the “Saturday Night Live” skits where Bill Hader’s Stefon character talks up the latest fictional New York nightspot and describes all the great things the club has?

Arcade Fire’s spectacle was the equivalent of that, starting with fans who were encouraged to come dressed either in costumes or formal wear.

Fans went all out — spotted were a walking Beef Jerky, a man in a horse head, pirates, monsters and a family decked out as characters from “The Wizard of Oz.”

Even Arcade Fire’s Win Butler joined in, wearing a mask and sitting undetected in the audience during the opening band’s set.

The throbbing dance-rock concert included a deadmau5 diss, a fake band, a Chuck Berry cover, a DJ in a bear suit, a rotating mirrored man, a Rocket Bar reference and much more.