The professional dancers perform together, Mackenzie Ziegler performs, and the cast of “Dancing With the Stars: Juniors” makes an appearance.

The 12 remaining couples dance to iconic songs from New York; Sarah Bockel performs; the couples dance to a style they haven’t yet.

Blue Man Group joins the dancers for the opening performance; Boyz II Men performs; the couples dance to a style they haven’t performed yet.

The 11 remaining celebrities stroll down memory lane and celebrate through dance a time in their lives that left a lasting impression.

A new cast of 13 celebrities kick off the competition by performing together to Erin Boheme’s “I Won’t Dance.”