'The Voice' season 14, episode 25 recap and performances

The final "The Voice" performance show aired Monday, with the NBC singing competition's four finalists pulling out all the stops in hopes of getting America to vote for them as the winner. From superstar duets to their first original songs, how did Brynn Cartelli, Kyla Jade, Spensha Baker and Britton Buchanan impress the audience? Here are the highlights music fans need to know from Monday's episode:

1) Coach duets

The centerpiece of Monday's episode was the traditional duets between finalists and their coach. Kelly Clarkson and Brynn Cartelli delivered a great cover of "Don't Dream It's Over" that you can watch by playing the video above. Meanwhile, Alicia Keys and Britton Buchanan covered "Wake Me Up" with some orange flair, while Blake Shelton once again had to perform twice. He covered "Tell Me About It" with Spensha Baker and "Only Love" with Kyla Jade. Say what you will about Shelton's domination of "The Voice" but his finalist duets are always the most entertaining. It's clear from his performances that he loves working with these contestants.

2) Original singles

Monday also saw the debut of the finalists' original singles (or, at least, singles that were written for them by other songwriters). They performed them live on the show and audiences got glimpses of their corresponding music videos. Click the link above to watch Baker's video for "Old Soul," while you can also see Cartelli's video for "Walk My Way", Buchanan's video for "Where You Come From" and Jade's video for "The Last Tear." Who had the best single? Jade's extra experience really shines through in her music video, while Baker's song is the most intriguing one. If that's what her winner's album is going to sound like, it's going to be worth the listen. It also proves that "The Voice" would be even better if it had a way to incorporate more original music.

Related: Jennifer Hudson among performers added for Tuesday's 'Voice' finale

3) One last cover

Every artist had one final cover performance to impress the judges. The best of them was Cartelli swinging for the fences with her cover of "Skyfall." The James Bond anthem is not an easy song to sing, and Cartelli's version wasn't the same as Amber Carrington's first cover of the song back in season 4 (a whole four years ago!) Carrington really embodied the whole Bond Girl ethos while also delivering a knockout vocal performance. While Cartelli wasn't quite that stunning, she deserves credit for an ambitious choice and something outside of the usual pop-rock realm that makes up most of the song choices on these TV singing competitions. Regardless of how she finishes on Tuesday, she's proven that she has versatility.

"The Voice" airs Mondays and Tuesdays at 8 p.m. on NBC. "Voice" fans can get tickets to see Adam Levine and Maroon 5 live through AXS by using the links below:

Sept. 9 - Denver, CO - Pepsi Center (Click here for tickets)
Sept. 11 - Kansas City, MO - Sprint Center (Click here for tickets)