Blake Shelton, Finalist Grace West Sing Blake's 'Lonely Tonight'

The Season 23 finale of The Voice aired on Tuesday night (May 23) and featured incredible duet performances between coaches and their team members.

During the two-hour episode, Blake Shelton — who is retiring from the show for good — took the stage with his final two contestants, who are still in the running for the grand prize.

Halfway through the episode, he and his sole country singer Grace West joined forces on a collaboration of Shelton’s “Lonely Tonight,” a duet which originally features vocals by Ashley Monroe.

Onstage, Shelton and West provided a perfect blend as they traded vocals back and forth on the ballad. Neither vocalist outshined the other. West, who donned a floral floor-length gown, looked comfortable alongside the seasoned Oklahoma country crooner, proving that she fit into the Top 5 seamlessly.

Before teaming with West, Shelton took the stage with his other artist NOIVAS. The two delivered a cover of Michael Buble’s “Home,” which also appears on Shelton’s Pure BS album.

Tuesday night’s broadcast also included special performances by Diplo and Lily Rose, who took the stage with their collab “Sad in the Summer." Cee Lo Green opened the show with a powerful '80s medley, which featured Team Blake’s winners from previous years — a special treat for Shelton.

The Season 23 finale also had special pre-recorded clips from artists like Gwen Stefani, Dolly Parton and more.

Famous Singers from The Voice, Then + Now

Ten years (and counting) made a huge difference for many of the most popular singers and stars of The Voice. Blake Shelton looks noticeably different, but so do some of country music's most memorable performers.

Winners like Cassadee Pope and Danielle Bradbery wore baby faces when they auditioned during their respective seasons. The same can be said for Morgan Wallen, a forgotten castmember from the show who's transformed more than anyone else on this list of The Voice stars then and now.

Blake Shelton's Winners From 'The Voice': Where Are They Now?

How many of the nine Team Blake winners from The Voice can you name? Blake Shelton is the show's winningest coach, and several have had hits at country radio and beyond. Several more have shifted genres, changed their name or just flat-out gone missing. Here is the latest on every Team Blake winner from The Voice.