The Jonas Brothers are pulling out all the stops for their 20th anniversary tour.
Joe Jonas, Nick Jonas, and Kevin Jonas kicked off their JONAS20: Greetings From Your Hometown tour on August 10 at MetLife Stadium in East Rutherford, N.J. — their home state — with a star-studded lineup of musical guests throughout the show. And the surprises haven’t stopped at each subsequent show since then, with the brothers bringing out artists who are originally from each place.
From shocking reunions more than a decade in the making to surprising collaborations, here is every surprise guest who has come out during the anniversary tour (so far).
Kevin Mazur/Getty
Switchfoot
Kevin Mazur/Getty
The opening night of the tour brought it back to one of the Jonas Brothers’ earliest musical inspirations. Christian rock band Switchfoot came out to perform their hit song “Meant to Live” with the brothers, and stayed onstage to sing the Jonas Brothers’ song “Hold On” (which Joe revealed was actually inspired by “Meant to Live”).
This isn’t the first time these two bands worked together, as the Jonas Brothers previously recorded a cover of Switchfoot’s “The Beautiful Letdown,” and Switchfoot frontman Jon Foreman co-wrote the Jonas Brothers’ recent title track “Greetings From Your Hometown.”
Jesse McCartney
Kevin Mazur/Getty
The tour’s opening night in New Jersey continued with a full circle reunion when Jesse McCartney performed “Beautiful Soul” with the Jonas Brothers. He then returned for the Aug. 23 show at Boston’s Fenway Park to sing “Beautiful Soul” again, as well as “Leavin’.”
This was a moment 20 years in the making, as McCartney helped launch the Jonas Brothers’ careers by having them perform on his Beautiful Soul tour in 2005 — which was the Jonas Brothers’ first-ever professional tour.
“We were playing in front of malls and anybody that would listen to us,” Joe told the crowd in videos captured by fans. “There was this person who was very kind enough to just allow us on the opening slot, and we quickly became friends.”
Dean Lewis
Later during the tour’s opening night, Australian pop singer Dean Lewis came out to perform “Loved You Better,” his song with the Jonas Brothers off their latest album, Greetings From Your Hometown.
Big Rob
Kevin Mazur/Getty
The Jonas Brothers’ fan-favorite bodyguard Robert “Big Rob” Feggans also came out during the tour’s opening night to perform his rap verse of “Burnin’ Up.”
The Jonas family
It was a whole family affair during the tour’s opening night. After Big Rob’s appearance, the entire extended Jonas family joined the boys onstage to sing the ballad “When You Look Me in the Eyes.”
Kevin, Joe, and Nick sang with their parents, Kevin Jonas Sr. and Denise Jonas, younger brother Frankie Jonas, as well as Kevin’s wife, Danielle Jonas, and their daughters Valentina, 8, and Alena, 11. JinJoo Lee of Joe’s former band DNCE was seen wiping tears away in fan videos while playing the guitar during the wholesome moment.
Demi Lovato
Kevin Mazur/Getty
But the biggest moment of the first night was for Camp Rock fans everywhere. Demi Lovato and the Jonas Brothers shared the stage for the first time in over a decade in a surprise appearance celebrating their beloved Disney Channel Original Movie franchise.
Lovato joined the boys onstage halfway through “Gotta Find You” to perform her part of their iconic duet, as well as “This Is Me” from the first movie and “Wouldn’t Change a Thing” from Camp Rock 2: The Final Jam.
“I think it’s time that we all walk down this memory lane to celebrate a little movie called Camp Rock,” Nick announced to the crowd before the big moment.
2008’s Camp Rock was Lovato’s big breakout role as aspiring singer Mitchie Torres who falls in love with pop star Shane Gray (Joe) at a summer music camp. Nick and Kevin starred in the movie as the other two members of Shane’s band, Connect3. In addition to starring together in a sequel, Lovato and Joe also dated in real life.
All Time Low
During their next show on August 12 at Jiffy Lube Live in Gainesville, Va., the Jonas Brothers brought out pop-punk band All Time Low. They performed All Time Low’s hit song “Dear Maria, Count Me In.”
The Click Five
The Jonas Brothers brought out another band they opened for 20 years ago at their next date at the Freedom Mortgage Pavilion in Camden, N.J., on August 14: The Click Five — which now features three members: Kyle Patrick, Joe Guese, and Ethan Mentzer — came out to sing their 2005 hit “Just the Girl” with the brothers.
Hanson
The nostalgia kept on coming at the next tour stop, when the Jonas Brothers brought out another classic brother trio. Hanson — featuring brothers Zac Hanson, Taylor Hanson, and Isaac Hanson — came out at the Veterans United Home Loans Amphitheater in Virginia Beach, Va., on August 15 to sing their hit song “MMMBop.”
Cartel
The next tour stop delivered two surprise guest performers: First up was pop-punk band Cartel’s lead singer Will Pugh, who joined the Jonas Brothers onstage to perform his hit song “Say Anything (Else)” at the Hersheypark Stadium in Hershey, Pa. on Aug. 17.
Cartel is also currently celebrating the 20th anniversary of their hit album Chroma with a tour and re-recorded version of the entire record (available Sept. 12).
Hoobastank
The night’s next surprise was huge for rock fans when Hoobastank came out to perform their 2003 hit song “The Reason.”
JP Saxe
While the following two tour dates didn’t get any surprise guests, the Jonas Brothers brought out Grammy-nominated Canadian singer-songwriter JP Saxe at the Rogers Center in Toronto on Aug. 21.
Nick called Saxe “one of the most respected songwriters in the industry” before performing his song “If the World Was Ending.” Saxe also stayed onstage to perform Camp Rock‘s “Gotta Find You” with the brothers.
Alessia Cara
The Toronto tour stop also featured a surprise performance from Alessia Cara, who sang her hit song “Scars to Your Beautiful.”
Kevin introduced Cara by revealing how important her music is to his daughters.
“As a father to two growing young women, when there is music in this world that does not tear you down, that makes you feel special, that makes you feel beautiful, shows you who you can be, I will always be here for that moment and those artists and those songs,” Kevin said in videos captured by fans. “And the minute my daughter heard this song for the first time, she goes, ‘I love this,’ and in my heart, I knew she felt heard and seen and beautiful.”
Dashboard Confessional
As the tour continued to Boston, the Jonas Brothers brought out two more surprise guests at the Aug. 23 show at Fenway Park. First up was Dashboard Confessional‘s frontman Chris Carrabba, who performed his emo band’s 2004 hit song “Vindicated.” He then joined the Jonas Brothers in singing their 2007 song “Take a Breath,” which Joe said was inspired by Dashboard Confessional.
Joe introduced Carrabba as an artist they “always listened to” and “taught us how to sing, just from afar.”
“I don’t know how many times I’ve wept to his music,” Joe said in fan videos posted to social media.
Sign up for Entertainment Weekly’s free daily newsletter to get breaking TV news, exclusive first looks, recaps, reviews, interviews with your favorite stars, and more.
JoJo
After McCartney’s return appearance, the Jonas Brothers then brought out Joanna “JoJo” Levesque at the Boston show. JoJo performed her hit “Leave (Get Out),” as well as the Jonas Brothers’ song “Vacation Eyes.”
Glen Powell
In what is perhaps the most shocking (and random) appearance yet, actor Glen Powell turned up at the very beginning of the Boston show.
No, Powell isn’t from Boston — he’s currently filming a movie there. He also didn’t sing anything; after introducing the Jonas Brothers and hugging each of them, Powell just walked off stage. Sure, why not?
The Greetings From Your Hometown tour celebrates the 20th anniversary of the Jonas Brothers’ formation, as well as their recently released seventh studio LP. The Jonas20 tour spans 52 dates across North America, and wraps at Mohegan Sun in Connecticut on Nov. 14.