Information about the finale.
https://www.usmagazine.com/entertainment/pictures/dwts-finale-song-choices-performers-and-everything-to-know/
Performers will be:
Cher - The Beat Goes On
Pitbull - 3 to Tango
Ne-Yo: Me Quedaré Contigo
Additionally, past eliminated celebrities from this season will return to dance to one final number.
ABC hasn't announced which celebrities will be returning.