Touring behind his 2010 album The Age of Adz, Sufjan Stevens did something unexpected: He dressed in garish neon costumes and integrated weird, robotic choreography into his act. This raised some eyebrows. Orchestral pop masterminds don't often turn into dance machines; you will rarely see XTC's Andy Partridge don Hammer pants, for example.

Now that he's winding down the Age of Adz tour with a pair of shows in Brooklyn's Prospect Park next week, he's ramping up the choreography. Vulture got a camera crew into Sufjan's dance rehearsal for the shows. In the video below, we see Sufjan and his backup dancers trying some new moves, Sufjan talks a bit about the dance element of his show: "I feel like we're more taking cues from Lady Gaga and Justin Bieber at this point." It's.... something.