updated 04/08/2014 AT 2:00 AM ET
•originally published 04/08/2014 AT 6:30 AM ET
The final night of the battle rounds concluded Monday on season 6 of The Voice with some artists stepping out of their comfort zones to show off different sides of their vocal personalities.
Florida bartender Jake Barker, 28, showed off a formidable falsetto as he took on Usher’s “Climax” in a sexy duet with Georgia’s Brittnee Camelle, 23. The singers turned up the heat for Adam Levine, who had stolen both artists from Usher.
“I really didn’t expect that from you,” Shakira said of Barker’s trills and runs.
Levine agreed, noting Barker’s inexperience. “It kind of blows me away,” he said as he picked Barker. “You seem like someone who has been singing his whole life.”
“He comes out here every time with this 150 percent confidence,” said Shelton.
Team Usher saw two strong battles Monday. New Jersey’s Melissa Jiménez surprised some by ousting Washington native Music Box on the Alicia Keys hit “Girl on Fire.”
Shelton praised Music Box’s energy and presence but said “Melissa is very smooth when she sings and she just glides through there.”
Usher also had a tough decision with Virginia’s Bria Kelly, 17, and Utah’s Madilyn Paige, 16. Their performance of the Pretenders classic “I’ll Stand by You” left the judges feeling something was missing.
“I’m not saying it was bad, but I don’t think anybody really stood out,” Shelton said. Levine agreed: “I was left desiring more.”