Here's Every Celebrity Who's Worked with the Artists on The Voice

The Voice always brings four star-powered Coaches to our screens every season, but the red chairs aren't the only place viewers will spot celebrities on the show. For several seasons, each Coach brought in at least one celebrity Battle Advisor to provide some extra mentorship and motivation, not to mention additional appearances from big names serving as Mega Mentors later on.

As Battle Advisors, these successful musicians helped Artists gear up for their nail-biting competitions in the Battle Rounds, where they go head-to-head on a duet with a fellow teammate after the Blind Auditions close. Other artists have stepped in for Knockout Rounds and the live shows. Season 23 introduced some changes to the formula — instead of Battle Advisors or Key Advisors, one celebrity advises all the teams as THE Mega Mentor for the Knock-Outs.

Over the years, we've seen many celebrities help Artists on The Voice lean into their natural talent to impress their Coach, often bringing nervous competitors out of their shells. Revisit all of the talented people who have appeared on The Voice from Seasons 1-25. 

Season 25: Mega Mentor Keith Urban

Coaches: John Legend, Reba McEntire, Chance the Rapper, and Dan + Shay

Keith Urban on The Voice Season 24. Photo: Trae Patton/NBC

The Season 25 Coaches panel featured many returning Coaches while welcoming the first-ever Coaching duo in a customized red chair: Dan + Shay. Country icon Keith Urban joined the competition as Mega Mentor, dishing some coveted intel to the Artists ahead of the Knock-Outs.

Season 24: Mega Mentor Wynonna Judd

Coaches: Reba McEntire, John Legend, Gwen Stefani, and Niall Horan

The Season 24 Coaches panel featured returning Coaches John Legend, Gwen Stefani, and Niall Horan, fresh off his debut season victory with Season 23 Artist Gina Miles. After stealing hearts as the first-ever Mega Mentor, McEntire cemented her status as a Voice legend by becoming a Season 24 Coach. For McEntire's debut in the red chair, the panel was graced by country powerhouse Wynonna Judd as the Mega Mentor, who inspired heartfelt performances from the entire Artist lineup.

Dan + Shay and Wynonna Judd appear in Season 24 Episode 16 of The Voice Photo: Greg Gayne/NBC

Season 23: Mega Mentor Reba McEntire

Coaches: Blake Shelton, Kelly Clarkson, Niall Horan, and Chance the Rapper

On Season 23 of The Voice, Coaches Blake Shelton, Kelly Clarkson, Niall Horan, and Chance the Rapper changed things up by not having any Battle Advisors. Instead, country icon Reba McEntire served as the Mega Mentor for all the teams, advising Artists ahead of the Knockouts. The "Fancy" singer previously appeared on The Voice as a Battle Advisor for Team Blake on Season 1, so it served as a perfect bookend to Blake's time as a Coach on the show.

Season 22: Charlie Puth, Jazmine Sullivan, Jimmie Allen, Sean Paul

Coaches: Blake Shelton, Gwen Stefani, John Legend, Camila Cabello

Coach Camila Cabello joined seasoned Coaches Gwen Stefani, John Legend, and Shelton for Season 22 of the show. Each Coach invited their own celebrity guest to advise their Artists for the Battle Rounds. Cabello texted fellow artist Charlie Puth to snag him for her team. Legend brought on Jazmine Sullivan, Shelton chose Grammy nominee Jimmie Allen, and Stefani invited Sean Paul. 

Season 21: Dierks Bentley, Jason Aldean, Camila Cabello, Kristin Chenoweth, and Key Advisor Ed Sheeran

Coaches: Blake Shelton, Kelly Clarkson, John Legend, Ariana Grande

Shelton chose Dierks Bentley as his team's advisor for Season 21, citing their long friendship and the artist's successful musical career as his reasons. Coach Ariana Grande went with Kristin Chenoweth, and the two talked about how they first met backstage during Chenoweth's tenure in the Broadway show Wicked when Grande was just 10 years old. "You sang, and that's when I knew," Chenoweth recalled. "I can't believe how far you're come, and for you to invite me... thank you." 

Team Kelly was graced with the help of Jason Aldean, while Team Legend received guidance from Cabello (before she became a Coach herself in the following season). "I would not be where I am today if I hadn't auditioned for a show like this," Cabello said. "It genuinely gives people an opportunity, which I think is so amazing."

Season 21 also had Key Advisor Ed Sheeran. "Being a Mega Mentor and coming in is perfect, because you get to come and give constructive criticism that genuinely makes the performance better, and then leave," Sheeran said. 

Season 20: Dan + Shay, Luis Fonsi, Brandy, Darren Criss, and Key Advisor Snoop Dogg

Coaches: Blake Shelton, Kelly Clarkson, John Legend, Nick Jonas

Before the Battle Rounds in Season 20, "Tequila" singers Dan + Shay advised Team Blake while Luis Fonsi met with Team Kelly. "I kind of have a leg up this time, because you're a voice coach," Clarkson said to Fonsi. Fonsi said he was happy to advise on the process without having to make the "impossible choices" between Artists. 

Coach Nick Jonas brought on his friend Darren Criss for pre-Battle advice. "It may have been a horrible choice, but there's only one way to find out," Criss joked. Team Legend got the help of the musician Brandy, who was excited to join the show. "This is a dream. Music is my life, so to be part of such a wonderful show that represents music is a dream," she said. 

The Artists of Season 20 later received some useful advice from Key Advisor Snoop Dogg, who went on to co-host NBC's American Song Contest with Clarkson. 

Season 19: Miguel, Leon Bridges, Julia Michaels, Kane Brown, and Key Advisor Usher

Coaches: Blake Shelton, Gwen Stefani, Kelly Clarkson, John Legend

Season 19 received some incredible words of wisdom from Key Advisor (and former Voice Coach) Usher ahead of the Knockout rounds. "You have to give your all at all times as an artist. You put in the time for yourself, so show up for yourself," Usher told Artists. "Stitch that on a pillow," Clarkson said. 

Before that, Artists had the chance to hear from one of four Battle Advisors. Team Blake met with Kane Brown and Team Kelly got advice from Leon Bridges. Stefani chose friend and acclaimed songwriter Julia Michaels, and Legend brought on "Sure Thing" singer Miguel. 

Season 18: Ella Mai, Dua Lipa, Kevin and Joe Jonas, Bebe Rexha, and Key Advisor James Taylor

Coaches: Blake Shelton, Kelly Clarkson, John Legend, Nick Jonas

Season 18 had yet another star-studded lineup of advisors. Bebe Rexha joined Team Blake, Dua Lipa joined Team Kelly, and Ella Mai joined Team Legend. Nick Jonas pulled out all the stops on his first coaching season by bringing on his two older brothers, making for a Jonas Brothers reunion. 

"We're thrilled, we're happy to help Nick through this process and hopefully pass on some knowledge and good information and wisdom to these artists," Joe Jonas said. 

For the Knockout rounds, singer and songwriter James Taylor came on board and serenaded the audience with his hit song "Moon River." 

Season 17: Usher, Normani, will.i.am, Darius Rucker, and Key Advisor Taylor Swift

Coaches: Blake Shelton, Gwen Stefani, Kelly Clarkson, John Legend

For Season 17, Legend brought on fan-favorite Usher to give "Ph.D.-level advice" (in Legend's words). Team Kelly met with acclaimed singer Normani, Team Blake received help from Hootie & the Blowfish singer turned county artist Darius Rucker, and Team Gwen had advisor will.i.am. 

The Breakout performers in Season 17 also got help from someone who knows the industry all too well. "They never react like that when it's just me," Shelton said after seeing his Artists shocked reaction to meeting Key Advisor Taylor Swift. 

Season 16: Charlie Puth, Khalid, Kelsea Ballerini, Brooks & Dunn

Coaches: Blake Shelton, Adam Levine, Kelly Clarkson, John Legend

Familiar face Puth appeared as Team Adam's advisor in Season 16. Clarkson brought on Kelsea Ballerini, who was actually on tour with Clarkson around the time of the season's filming. (Ballerini had also served as a fifth Coach for the Comeback Stage on the previous season of The Voice.) First-time Coach Legend got to meet with talented singer-songwriter Khalid and Team Blake met with country singers Brooks & Dunn. 

"Brooks & Dunn are part of the reason that I do what I do," Shelton said. "These guys have accomplished everything you could dream of. They're iconic." 

Season 15: CeeLo Green, Halsey, Thomas Rhett, Keith Urban, and Key Advisor Mariah Carey

Coaches: Blake Shelton, Adam Levine, Jennifer Hudson, Kelly Clarkson

CeeLo Green returned to The Voice to mentor Team Adam while Halsey came onto Coach Jennifer Hudson's team. Meanwhile Team Kelly and Team Blake met with advisors Thomas Rhett and Keith Urban, respectively. 

"I wanted to blow my team away by having someone awesome, so I did," Clarkson said of choosing Rhett. 

Ahead of the Breakout rounds, acclaimed vocalist Mariah Carey visited the Artists to give some extra pushes. "Whether you win or not, you both win that exposure that's going to give you a leg up," Carey told them. 

Clarkson then brought her Season 14 winner, Brynn Cartelli, back to advise her team during the Top 8.

Season 14: Julia Michaels, Hailee Steinfeld, Shawn Mendes, Trace Adkins

Coaches: Blake Shelton, Adam Levine, Alicia Keys, Kelly Clarkson

Coach Alicia Keys brought Shawn Mendes on for her team, and the two reflected on their first meetup. "I basically told everyone I needed to meet her, otherwise I would die," Mendes said. The season also saw Michaels as a guest for Team Adam, Hailee Steinfeld on Team Kelly, and country singer Trace Adkins on Team Blake. 

For the Knockouts, each team enlisted former winners to offer advice: Jordan Smith (Season 9) for Team Adam; Chris Blue (Season 12) for Team Alicia; Cassadee Pope (Season 3) for Team Kelly; and Chloe Kohanski (Season 13) for Team Blake.

Season 13: Joe Jonas, Billy Ray Cyrus, Kelly Rowland, Rascal Flatts, and Key Advisor Kelly Clarkson

Coaches: Blake Shelton, Adam Levine, Miley Cyrus, Jennifer Hudson

Before she coached her own teams to success, Clarkson appeared on The Voice as a Key Advisor. Clarkson and Shelton shared a sweet dance party on the Voice stage even then, which is fun to look back on under the new context of their seasons-long competitive rivalry. 

That season also saw another family reunion on stage when Team Miley got the help of Cyrus's father, Billy Ray Cyrus. First-time Coach Jennifer Hudson's team was mentored by artist Kelly Rowland (formerly of Destiny's Child), Joe Jonas came on board under Team Adam, and Team Shelton met with the successful music group Rascal Flatts. 

Season 12: John Legend, Celine Dion, DJ Khaled, Luke Bryan, and Key Advisor Shania Twain

Coaches: Blake Shelton, Adam Levine, Gwen Stefani, Alicia Keys

Shania Twain pretty much said "Let's Go Girls" to the Season 12 Breakout performers when she surprised them as the season's Key Advisor.

Before that, the Artists got to meet with Battle Advisors Celine Dion (Team Gwen), DJ Khaled (Team Alicia), Luke Bryan (Team Blake), and soon-to-be Voice Coach Legend (Team Adam). 

Season 11: Sammy Hagar, Joan Jett, Charlie Puth, Bette Midler, and Key Advisors Tim McGraw, Faith Hill, and Garth Brooks

Coaches: Blake Shelton, Adam Levine, Miley Cyrus, Alicia Keys

Season 11 proved to be one for the books, with seven big names coming onto the Voice to share their musical prowess. "Red Rocker" Sammy Hagar joined Team Adam, Bette Midler joined Team Blake, and Puth had his first of many Voice appearances under Team Alicia. Coach Cyrus pulled out all of the stops and got rockstar Joan Jett to advise her team.

For the Breakout rounds, country legends Tim McGraw, Faith Hill, and Garth Brooks blew the minds of the Artists by teaming up for some unmissable advice. 

Season 10: Tori Kelly, Patti LaBelle, Sean "Diddy" Combs, Gwen Stefani, and Key Advisors P!NK and Miley Cyrus

Coaches: Blake Shelton, Adam Levine, Christina Aguilera, Pharrell Williams

In Season 10, Stefani (who was a Coach in previous Seasons 7 and 9) advised Team Blake, while other Artists received help from Tori Kelly (Team Adam), "Godmother of Soul" Patti LaBelle (Team Christina), and Sean "Diddy" Combs (Team Pharrell). Later, Key Advisors P!NK and Cyrus (who became a Coach in Season 11) helped out the Artists as well. 

Season 9: John Fogerty, Selena Gomez, Missy Elliot, Brad Paisley, and Key Advisors Rihanna and Dolly Parton

Coaches: Blake Shelton, Adam Levine, Gwen Stefani, Pharrell Williams

Season 9 worked hard (and by that we mean, "9 to 5") to bring out the star power. Selena Gomez joined Team Gwen for some pre-Battle advice, John Fogerty met with Team Adam, Missy Elliot came onto Team Pharrell, and country singer Brad Paisley joined Team Blake. 

For the Knockout rounds, powerhouses Rihanna and Dolly Parton offered their best words of wisdom and support for the final few lucky Artists. 

Season 8: Ellie Goulding, Dave Stewart, Usher, Nick Jonas, Mark Ronson, Gwen Stefani, Lionel Richie, Ryan Tedder, Meghan Trainor, Scott Hendricks, CeeLo Green, and Key Advisors Nate Ruess and Reba McEntire

Coaches: Blake Shelton, Adam Levine, Christina Aguilera, Pharrell Williams

In Season 8, the sky was the limit when it came to celebrity cameos on the show: Each Coach brought a celebrity to advise their team in for Battle Rounds, Top 10 and Top 8. On top of that, Fun lead singer Nate Ruess was a key advisor for the Knockouts and McEntire for the Top 12. 

Ellie Goulding joined Team Adam for Battles; Dave Stewart came in for the Top 10; and previous Season 4 and 6 Coach Usher for the Top 8. Team Christina enlisted Jonas for the Battles, super-producer Mark Ronson for the Top 10, and Season 7 Coach Stefani for the Top 8. Williams invited Lionel Richie to advise during the Battles, OneRepublic's Ryan Tedder to do so during the Top 10, and also had Stefani—a long-time collaborator—for his Top 8 advisor. Team Blake, meanwhile, snagged Meghan Trainor for the Battles, Scott Hendricks for the Top 10, and former Coach Green for the Top 8.

Season 7: Stevie Nicks, Patrick Stump, Gavin Rossdale, Christina Aguilera, Alicia Keys, Diana Ross, Little Big Town, Colbie Caillat, and Key Advisors Taylor Swift, and Chris Martin

Coaches: Blake Shelton, Adam Levine, Gwen Stefani, Pharrell Williams

Swift's second of three Voice appearance started with her advising Team Gwen for Battles in the latter's first season, alongside Coach Aguilera and Gavin Rossdale. Stevie Nicks came on as an advisor for Team Adam with Fall Out Boy's Patrick Stump. Future Coach Keys and Diana Ross helped out Team Pharrell, while Team Blake met up with Little Big Town and Colbie Caillat.

Swift ultimately became a Key Advisor for all the teams with Coldplay's Chris Martin.

Season 6: Aloe Blacc, Graham Nash, James Valentine, Miranda Lambert, busbee, Jill Scott, Natural, The Band Perry, Scott Hendricks, Gwen Sebastian, and Key Advisor Chris Martin

Coaches: Blake Shelton, Adam Levine, Shakira, Usher

Martin's first time on the show was as a Key Advisors for the Season 6 Artists.

But, during Battles, Team Adam worked with Aloe Blacc, Graham Nash, and James Valentine; Team Shakira met with Miranda Lambert and busbee; and Team Usher worked with Jill Scott and Natural. Shelton invited The Band Perry—who had opened for him on his 2014 tour—to advise his team alongside producer Scott Hendricks and Gwen Sebastian. 

Season 5: Ryan Tedder, Miguel, Ed Sheeran, Jerry Slaughter, and Cher

Coaches: Blake Shelton, Adam Levine, CeeLo Green, Christina Aguilera

Musical icon Cher shocked Team Blake ahead of the Battle Rounds, jumping in to give them some extra vocal coaching. Green brought on singer Miguel, while Levine invited Ryan Tedder, and Aguilera's Artists worked with Jerry Slaughter and Sheeran. 

Season 4: Hillary Scott, Joel Madden, CeeLo Green, Pharrell Williams, Aakomon Jones, Taylor Swift, Sheryl Crow

Coaches: Blake Shelton, Adam Levine, Shakira, Usher

Aakomon Jones came on to work with Team Usher in Season 4 (the two artists later teamed up for Usher's Las Vegas residency) along with future Coach Williams, and Swift, marking Swift's first time on the show. 

Lady A singer Hillary Scott worked with Team Adam, former Coach CeeLo Green and Joel Madden both worked with Team Shakira, and Team Blake had "If It Makes You Happy" singer Sheryl Crow. "I love working with Blake," Crow said of her time on The Voice. "Who you see on the show is who he is in real life." 

Season 3: Mary J. Blige, Rob Thomas, Jennifer Hudson, Bill Withers, Patrick Monahan, Billie Joe Armstrong, Ron Fair, Michael Bublé, Scott Hendricks

Coaches: Blake Shelton, Adam Levine, CeeLo Green, Christina Aguilera

Season 3 was the third season in a row with the original Coaches: Shelton, Levine, Green, and Aguilera. Team Adam got to work with the talented Mary J. Blige; Team CeeLo met with Rob Thomas, future Coach Jennifer Hudson and Bill Withers; Aguilera brought in Green Day's Billie Joe Armstrong and producer Ron Fair; and Team Blake worked with Michael Bublé and Scott Hendricks. 

Season 2: Alanis Morissette, Robin Thicke, Ne-Yo, Kenny "Babyface" Edmonds, Jewel, Lionel Richie, Kelly Clarkson, Miranda Lambert

Coaches: Blake Shelton, Adam Levine, CeeLo Green, Christina Aguilera

"One Hand in My Pocket" singer Alanis Morisette and Robin Thicke both helped out on Team Adam in Season 2. Team CeeLo worked with Ne-Yo and Kenny "Babyface" Edmonds; Team Christina worked with musical powerhouses Jewel and Lionel Richie; and Team Blake worked with future Coach Clarkson and country singer Miranda Lambert. 

Season 1: Adam Blackstone, Monica, Sia, Reba McEntire

Coaches: Blake Shelton, Adam Levine, CeeLo Green, Christina Aguilera

Shelton brought on McEntire as his first-ever advisor, just after she turned down the offer to be a Coach on the show. Team Christina worked with "Breathe Me" singer-songwriter Sia Furler (who'd contributed four songs to Aguilera's Bionic and one for the soundtrack to the film Burlesque just before the show began). Team CeeLo were helped by Monica and Team Adam met with musical director Adam Blackstone. 

Watch The Voice on NBC Mondays at 8/7c and the next day on Peacock.