The 10 remaining couples take a moment to reminisce as they perform dances inspired by a pivotal year that held great significance in their lives. To celebrate the beloved former head judge Len Goodman, pro dancers from past seasons will return to the ballroom to join current pro dancers, alongside judge Derek Hough and co-host Julianne Hough for a spectacular dance tribute set to the timeless melody "Moon River" by Henry Mancini. Returning pro dancers include Kym Johnson, Anna Trebunskaya, Karina Smirnoff, Edyta Sliwinska, Tony Dovolani, Louis van Amstel, Maks Chmerkovskiy and Mark Ballas. The honorary tribute will be choreographer by pros Val Chmerkovskiy and Jenna Johnson.