Rascall Flatts performed "Unstoppable" and also debuted their duet with Shakira, "Gypsy."
Sons of Sylvia performed. Carrie Underwood even stopped by to introduce her longtime friends.
Lady Antebellum also performed "Need You Now."
Casey, Mike and Siobahn were in the bottom three. Siobahn went home.
The theme next week is Frank Sinatra. Harry Connick Jr. will be the mentor.