The annual St. Jude This Shirt Saves Lives campaign kicked off on Monday (Nov. 26) with an entertaining variety show that included a very special moment, courtesy of Brian Kelley from Florida Georgia Line.

Actually, St. Jude patient Ian was the star. The 10-year-old from Franklin, Tenn., just beat cancer for a second time, and he stood onstage with his family as Kelley took the microphone to explain how a No More Chemo party works. When a patient gets his or her last treatment, the nurses gather to sing a song written decades years ago at St. Jude Children's Research Hospital in Memphis, Tenn. It's a joyous song that goes:

"Our patients have the cutest s-m-i-l-e / Our patients have the sweetest h-e-a-r-t / While we love to see you every day / Now’s the time we get to say / Pack up your bags, get out the door / You don’t get chemo anymore!"

Prior to the concert event, Kelley talked about his participation. "We're here to celebrate the kids and the patients and their process," he tells Taste of Country and select media. "Everything that St. Jude is doing is beyond what a lot of us can comprehend ... It's real life. It's extremely real."

Kelley's wife, Brittney, also participated in the evening by taking part in the This Shirt Saves Lives fashion show. Her boutique, Tribe Kelley, was one of a number of local shops that helped design outfits for models to wear as they showcased the new T-shirt. It's a black shirt this year, and you can only get one by becoming a St. Jude Partner in Hope. Brittney says she was raised with St. Jude calendars hanging on the wall in her house.

"My grandmother raised me so she was always very vocal about how we need to support something that's bigger than yourself," she explains.

Performances by Brett Young, LoCash, RaeLynn, Cassadee Pope and more, a magic show from Justin Flom and a live auction that netted tens of thousands of dollars for St. Jude were also part of the three-hour event at Nashville's Schermerhorn Symphony Center. Nearly 70,000 donors got the T-shirt in 2017 and 2018 and more than 250 celebrities posed for pictures in the shirt to create awareness for a campaign, now in its second year.

Taste of Country and Townsquare Media have done a radiothon / webathon each year since 2014, raising close to $7 million. More than 200 radio stations across America participate in Country Cares, a longstanding commitment to St. Jude from the country music community.

See More Photos from the This Shirt Saves Lives Concert