Listen. “Neon Vespers” just handed its choreography to Kai Adeyemi, who has never worked a Broadway stage — Adeyemi comes out of club floors and music-video soundstages — and the casting call went out this week, and reader, the casting call alone tells me this ensemble is going to move like nothing else on 44th Street this season.

Here’s what tipped me off. A Broadway dance call usually asks for the standard triple-threat toolkit: ballet, jazz, tap, sing, read. Adeyemi’s call asks for those AND “sustained floor work, isolations, and the ability to hold a groove through stillness.” That last phrase is the whole story. “Hold a groove through stillness” is club language. It means the body stays inside the beat even when it isn’t visibly moving — a micro-pulse in the ribs and the weight, so a dancer standing still still reads as dancing. Broadway ensembles are trained to hit shapes. Club dancers are trained to never leave the pocket. Adeyemi is casting for the second thing, and on a big stage that’s going to look genuinely new.

Why does that matter for a musical? Because the failure mode of the big pop-scored show is an ensemble that dances hard on the choruses and then just stands around parking-and-barking through the verses, waiting for the next eight-count. When the movement switches off, the whole stage goes flat and you feel the machinery. An ensemble that holds the groove through the quiet parts stays alive the entire time — the stage keeps breathing even when nobody’s throwing a kick. Get twenty bodies doing THAT in unison and the show has a low, constant hum of motion under everything. I have wanted to see someone try this on a Broadway scale for years.

The diva side is still a question mark and I need to name it. “Neon Vespers” is built around a lead who has to ride all this — a performer standing in the eye of an ensemble that never fully stops moving. That takes a specific kind of star, someone with enough presence to pull focus off twenty grooving dancers without doing more than they’re doing. If they cast a belter who just plants and sings, the contrast will swallow her. If they find someone who moves in the same language, it’ll be a conversation. Casting’s not announced. I’m nervous and excited in equal measure.

And here’s where I stay honest, because a debut is a debut. The leap from a three-minute music video to a two-and-a-half-hour musical is enormous. Video choreography is built for the edit — for camera cuts that hide the transitions and reset the energy every eight bars. Live, there’s no edit. Adeyemi has to sustain and build an arc across a whole evening with no cuts to bail them out, and plenty of brilliant screen choreographers have hit that wall hard. This could be a revelation or it could be a string of great eight-counts that never becomes a show.

But somebody looked at a club floor and said that belongs on Broadway, and casting for it on purpose. That’s the swing I buy a ticket for every time. Watch the casting. Then go see how the ensemble breathes.

“Neon Vespers” begins performances later this year.