From left: Adam Levine, CeeLo Green, Christina Aguilera, Blake Shelton and The Voice host Carson Daly
12/11/2012 at 07:40 AM EST
Talk about peaking at the right time.
The final four contenders
on The Voice
left the coaches nearly at a loss for words – in a good way! – during Monday night's semifinals.
Even Adam Levine and Christina Aguilera
, without any team members left, conjured up some kind words. They just had to get over their astonishment first.
Cee Lo Green had nothing but praise for his team members, Trevin Hunte, who sang "Wind Beneath My Wings," and Nicholas David, who sang "You Are So Beautiful."
"It was so heartfelt, so beautiful," Green said of David's performance, which the singer dedicated to his family.
also had admiration for his contestants, Cassadee Pope and Terry McDermott. Pope sang Keith Urban
's version of "Stupid Boy," a choice hand-picked by her coach. "Nobody that's ever been on this show can do what you just did," Shelton told her.
Aguilera, meanwhile, remarked that Pope's tone was so clear, it could be mistaken for Auto-Tune.
McDermott's rendition of the Beatles' "Let It Be" had Levine stumbling over his words, but he came up with a glowing review. "Thank God for you, Terry," he said. "You're so wonderful." And Shelton? "In my absolute heart I believe that that was musical perfection," he told McDermott.
returns Tuesday with the next elimination.