In the special "Judges' Challenge," the judges will come up with a specific request for his or her assigned couple. When this challenge was done in the past, the judges came up with the entire creative concept, costumes included, for the routines.
In the second round of competition, each couple will perform a style of dance that is brand new to the celebrities. There's a first time for everything! The styles will be the rumba, quickstep, jazz, tango, jive, foxtrot or Viennese waltz.
In addition, longtime Dancing with the Starspro Cheryl Burke will return to the dance floor with a special performance, and U.K. artist and songwriter Calum Scott will sing two songs.
Burke has won two mirrorball trophies and will perform a routine from her 30-city tour "Love on the Floor." Scott will sing a version of Robyn's "Dancing On My Own" while Witney Carson and Artem Chigvintsev dance together, and he'll also perform his new original song "Rhythm Inside."