The Jonas Brothers welcomed Joe Jonas’ ex-girlfriend, Demi Lovato, onstage for a surprise performance at their first concert on their Jonas20: Greetings from Your Hometown tour at New Jersey’s MetLife Stadium on Sunday night.

“JonasCON” is free to ticket holders. Fans can buy tickets for the Hershey show here (prices are as of the time of this publication): New Vivid Seats customers can get $20 off of a $200 order by using the code “PENNLIVE20″ at checkout.

TOLDJA: One of the Jonas Brothers is writing an Image Comics comic book, to be published in November Franklin Jonas, younger Jonas Brother, is co-writing a new Image Comic spin-off with Curt Pires. Lost Fantasy #5, launching November 19, features the debut of a key character for the spin-off series.

While Joe Jonas was unanimously named the “biggest foodie” out of the brothers, Kevin Jonas got the title of “pickiest eater,” despite his objections. As he pointed out, “I just don’t eat fruit, that’s the only thing I don’t eat.”

Nick Jonas' daughter Malti might call her dad and uncles' band "The Donut Brothers," but the former Coach on The Voice has another claim to fame. As his brothers, Joe and Kevin, happily revealed on TODAY, the youngest member of the Jonas Brothers is a tuna salad sandwich connoisseur.

The Jonas Brothers are back, and this time, they’re taking us home. With Greetings From Your Hometown, the trio trades in pop hooks for something more personal, weaving hometown nostalgia into a grown-up sound.

The event's filming occurred on Aug. 9, with a red carpet featuring stars such as Marcus King, Brothers Osborne, Sheryl Crow, CeCe Winans and more. The telecast included performances from the Jonas Brothers, Noah Cyrus, Gavin DeGraw, Marcus King and more artists.

With the audience clapping along in sync with the beat, Jonas delivered a mesmerizing stripped-down version of the track, highlighting the rich tone of his voice. The 36-year-old took it up a notch in the latter half of "Heart by Heart" by hitting some insane high notes in the bridge and final chorus — and he made it look so easy, too.