The twenty-first season of the American reality television series The Voice premiered on September 20, 2021, on NBC.

[1] Blake Shelton, Kelly Clarkson and John Legend returned as coaches for their twenty-first, eighth, and sixth seasons, respectively.

The coaches performed a mash-up of "Hold On, I'm Comin'" (John Legend & Blake Shelton) and "Respect" (Kelly Clarkson & Ariana Grande) at the start of the show.

This is the first instance that a debuting coach (Ariana Grande) does not have any four-chair turns on their team, as Shakira, Usher, Gwen Stefani, Pharrell Williams, Miley Cyrus, Alicia Keys, Jennifer Hudson, Kelly Clarkson, John Legend, and Nick Jonas have at least one four-chair turners on their teams on their respective debut season.

Among the contestants in this episode was Katherine Ann Mohler, who previously competed on the eleventh season of America's Got Talent as part of the vocal group OneVoice, until their elimination in the Judge Cuts.

[5] At the end of this round, eight artists will remain on each team; six will be battle winners, and one from a steal and a save, respectively.

It was revealed that for the Live Playoffs Wildcard, one previously eliminated artist from each team has the chance to be voted via Twitter to earn a place in the Top 13 (see Voice Comeback).

It was revealed that for the Live Playoffs Wildcard, one previously eliminated artist from each team has the chance to be voted via Twitter to earn a place in the Top 13 (see Voice Comeback).

Following the conclusion of the Knockouts, it was revealed that one previously eliminated artist from each team has the chance to return to the competition.

To participate in this poll, Ariana and Kelly selected Vaughn Mugol and Aaron Hines, respectively, who were eliminated in the Battles, while Blake and John selected Hailey Green and Samara Brown, respectively, who were eliminated in the Knockouts.

This is the third time, following the fifteenth and seventeenth seasons, that Kelly Clarkson has entered the Top 13 with four artists on her team.

As the studio performances start to be released, the trio Girl Named Tom becomes the first contestant this season to crack the Top 10 on iTunes Songs Chart.

However, for the first time this season, there are four contestants who cracked the top 100, with their highest charting being Girl Named Tom at #12, Jim & Sasha Allen at #33, Wendy Moten at #45, and Paris Winningham at #53.

[11] The three artists who landed in the bottom three – Holly Forbes, Jeremy Rosado, and Jershika Maple – were all originally from Team Kelly.

This week, Girl Named Tom's cover of "River" marked the first The Voice studio performance to hit #1 on iTunes Overall Chart since the eighteenth season.

Additionally, four other contestants reached the top 100: Wendy Moten at #17, Hailey Mia at #56, Joshua Vacanti at #90, and Paris Winningham at #96.

In addition, Hailey Mia became the first Wild card Instant Save winner to make it to the finale.

Additionally, with the elimination of Jim & Sasha Allen, Ariana Grande no longer has any artists left on her team, marking the first instance of a coach not being represented in the finale since the sixteenth season, as well as the first time since the thirteenth season that a debuting coach was not represented in the finale.

[15] Girl Named Tom was announced as the winner, making them the first-ever trio to win The Voice.