Overview:The three finalists will dance their favorite dance of the season once more. Then having combined the judges' scores with the viewers' votes two couples with the highest scores will dance an Instant Samba. Lady Antebellum is the special guest star of the two-hour Season 13 Finale. They'll perform the television debut of "Dancing Away with My Heart" and then their mega-hit "Need you Know". The winner of season 13 will be announced and will get the most anticipated mirror ball trophy.