Not every new artist can say they shared a stage — let alone a duet — with Celine Dion, but "The Voice's" season-five victor did just that after being inaugurated as the show's newest champion.

Decked out in coordinating black-and-white ensembles, Tessanne Chin sang alongside Dion on "Love Can Move Mountains" on Tuesday night. The two even shared a high five after the song. Forget the recording contract: that sounds like the real win to us.

Moments later, OneRepublic took the stage for a rocking rendition of their latest single, "I Lived." Later on in the broadcast, Chin would debut "Tumbling Down," an original composition by OneRepublic's Ryan Tedder, as her first single. "We wanted to do a real song about love and heartbreak, something that people could actually relate to," Tedder said. "Hopefully people dig it."

Team Christina finalist Jacquie Lee held her own opposite Hayley Williams when she joined forces with Paramore on "Ain't It Funny" midway through the two-hour broadcast. The group was treated to a standing ovation from Aguilera herself, while the ladies onstage embraced in a big bear hug before leaving the stage. Talk about girl power!

Dion returned to the stage (with a daring wardrobe change, we might add), this time to perform side-by-side with Ne-Yo on their latest collaboration, "Incredible." The song, the second single of Dion's "Loved Me Back to Life," was co-written by Ne-Yo himself.

With Avicii nowhere in sight, all eyes were on Aloe Blacc — described by host Carson Daly as one of the "great voices" to emerge from 2013 — and Team Xtina's Will Champlin as they exchanged verses on the infectious "Wake Me Up."

Producers pulled out the big guns to cap off this season, pairing Lady Gaga with mentor Aguilera for an eye-popping (albeit tame by Gaga standards) performance of "Do What U Want." The duo looked like long-lost pop sisters, donning matching blonde locks and shimmering shell-colored ensembles. In just under four minutes, the pair unleashed a slew of headline-worthy moments. Our favorite? Drinking champagne, newlywed-style, through interlinked arms. Pure. Gold.