In the Season 9 premiere, Coaches Adam Levine, Blake Shelton, Pharrell Williams, and Gwen Stefani perform together and then begin battling for the most promising singers in the blind auditions.

The blind auditions continue for a second night as Gwen Stefani, Adam Levine, Blake Shelton, and Pharrell Williams fight for the artists who could go all the way.

The blind auditions continue for a third night as Gwen Stefani, Adam Levine, Blake Shelton, and Pharrell Williams bolster their teams after a number of strong performances.

Coaches Gwen Stefani, Blake Shelton, Pharrell Williams, and Adam Levine zero in on the few remaining artists they need to have the strongest teams.

Coaches Gwen Stefani, Blake Shelton, Pharrell Williams, and Adam Levine try to find the best performers remaining during the final night of blind auditions.

Looking back at the blind auditions; never before seen moments; a look ahead at the battle rounds.

The battle rounds begin and the coaches enlist the help of their advisors: Adam Levine teams up with John Fogerty, Blake Shelton with Brad Paisley, Gwen Stefani with Selena Gomez, and Pharrell Williams with Missy Elliot. Coaches pit 2 singers from their team against each other in a dueling duet where the loser either goes home or is saved by an opposing coach using one of their two available steals. Those that remain will proceed to the knockout rounds.

The battle rounds continue and the coaches enlist the help of their advisers: Adam Levine teams up with John Fogerty, Blake Shelton with Brad Paisley, Gwen Stefani with Selena Gomez, and Pharrell Williams with Missy Elliot. Coaches pit 2 singers from their team against each other in a dueling duet where the loser either goes home or is saved by an opposing coach using one of their two available steals. Those that remain will proceed to the knockout rounds.

The battle rounds continue and the coaches enlist the help of their advisers: Adam Levine teams up with John Fogerty, Blake Shelton with Brad Paisley, Gwen Stefani with Selena Gomez, and Pharrell Williams with Missy Elliot. Coaches pit 2 singers from their team against each other in a dueling duet where the loser either goes home or is saved by an opposing coach using one of their two available steals. Those that remain will proceed to the knockout rounds.

The battle rounds continue and the coaches enlist the help of their advisers: Adam Levine teams up with John Fogerty, Blake Shelton with Brad Paisley, Gwen Stefani with Selena Gomez, and Pharrell Williams with Missy Elliot. Coaches pit 2 singers from their team against each other in a dueling duet where the loser either goes home or is saved by an opposing coach using one of their two available steals. Those that remain will proceed to the knockout rounds.

Each coach's remaining artists are paired against a teammate once more, but each select their own song to perform individually. Rihanna will serve as a key adviser and be on hand to work with all of the coaches and their teams as they prepare. The coaches alone will choose the winner from their team to move on to the live shows and the artist not selected will be available to be stolen by another coach.

The knockout rounds continue with coaches Adam Levine, Blake Shelton, Gwen Stefani, and Pharrell Williams' strongest team members remaining from the battle rounds.

The knockout rounds conclude with coaches Adam Levine, Blake Shelton, Gwen Stefani, and Pharrell Williams' strongest team members remaining from the battle rounds.

Relive the best moments from the season so far during this original jam-packed special chronicling the journey of the top 20 from the blind auditions to next week's live playoffs. Also includes never-before-seen footage of coaches Adam Levine, Blake Shelton, Gwen Stefani, and Pharrell Williams.

Adam and Gwen's artists (including two who had been eliminated) perform live, looking for America's votes and a spot in the Top 12.

On the second night of live shows, Blake and Pharrell's artists perform live, hoping to advance to the Top 12.

America's votes are revealed and each coach has one final artist to save to complete the Top 12.

The top 12 artists perform live in front of coaches Adam Levine, Blake Shelton, Gwen Stefani, and Pharrell Williams for America's vote.

America's votes are revealed and the bottom two vote getters must perform on the spot for America's instant save. Pharrell and Blake sing with their teams.

The top 11 artists perform live in front of coaches Adam Levine, Blake Shelton, Gwen Stefani, and Pharrell Williams for America's vote.

America's votes will be revealed to determine which artist will be eliminated from the competition.

The top 10 artists perform live in front of coaches Adam Levine, Blake Shelton, Gwen Stefani, and Pharrell Williams for America's vote.

The votes are revealed and two artists must perform in a musical face-off for a trip to the semifinals. Sia performs and Adam Levine sings with R. City.

In the Live Semi-Finals, the top nine artists perform live in front of coaches Adam Levine, Blake Shelton, Gwen Stefani, and Pharrell Williams for America's votes.

America's votes are revealed, then three artists sing for America's instant save and the final slot in the Top 4. Dolly Parton mentors and sings, and Season 3 winner Cassadee Pope performs.

In the final phase of the competition, the final four artists perform duets with their coaches and sing solo in their last voting performances.

It's the season finale, and host Carson Daly will reveal who America has chosen to be the winner. Performances by Justin Bieber, Missy Elliott & Pharrell, Sam Hunt, Coldplay, The Weeknd, Usher, and more.