They say two heads are better than one, and occasionally two voices are also better than one.
"The Voice" contestants are set to prove that Monday when they perform duets, both with their coaches and with celebrity musical guests, for part one of the NBC hit's season nine finale.
Blake Shelton's two remaining team members, Emily Ann Roberts and Barrett Baber, will, of course, be breaking out some country hits.
Roberts will be joined by Ricky Skaggs to sing "Country Boy," while Baber will be singing "No One Else on Earth" with Wynonna Judd.
Gwen Stefani's finalist Jeffrey Austin will get to sing "Hollow" with Tori Kelly, while Jordan Smith, Adam Levine's contestant who is the frontrunner heading into the finale, will get to perform "Without You" with help from Usher. Yes, the former coach is returning to take the stage. Usher served as a coach in seasons four and six, and his contestant Josh Kaufman won the sixth season.
So does Smith have this season in the bag? "I think it's obvious that Jordan's the best singer on the show and it would be a lie not to say that," Baber told E! News at the beginning of the season. "He's consistently delivered the most amazing performances I think the show has ever seen."
As for Smith, he was quick to praise all the "special people" competing this season, saying, "There's so much individuality. All of these singers have their own signature sound and I think it just proves that what society is looking for—something that's different, something that's exciting."
"The Voice" finale kicks off Monday at 8 p.m. on NBC.
(E! and NBC are both part of the NBCUniversal family.)