The Barnstable Brown Party ahead of the Kentucky Derby proved to be a fun night as Kid Rock, Travis Tritt and Doug E. Fresh jumped on stage to perform Rock's 2007 hit, "All Summer Long." The trio had the crowd bobbing along as several attendees filmed the once-in-a-lifetime collaboration.

The defining moment comes when Rock quiets the band and lets Fresh beatbox a portion of the track — much to the delight of the audience.

"Travis Tritt, Kid Rock, and Doug E Fresh ... no, I don't have that on the bingo card," a fan writes on social media.

"Woooo! Keep on being you bub!" one chimes in.

"So much FOMO right now," another confesses.

Kid Rock Performs With Travis Tritt and Doug E. Fresh

Rock's unique rendition of "All Summer Long" took place during the 35th annual Barnstable Brown Party. The black-tie affair serves as a fundraiser for the University of Kentucky's Barnstable Brown Diabetes Center. Throughout the years, the gala has raised more than $20 million for diabetes research.

This year's event took place on Friday (May 3) and featured guests including Wynonna Judd, Josh Groban, Aaron Rodgers, Tina Knowles and more. Groban also took the stage to perform, as did several others.

Shop the New Taste of Country Store!

Taste of Country Store
Taste of Country Store

Country Artists at the Kentucky Derby

In addition to the charity event, Rock and Tritt attended the Kentucky Derby. Other country artists who were spotted at the 150th installment were Thomas Rhett and his wife Lauren, Eric Church, Mickey Guyton, Randy Travis and more.

Judd also had the honor of singing the national anthem ahead of the race.

PICTURES: See Inside Kid Rock's Luxurious Childhood Home

Kid Rock has a rough-and-tumble image, but he didn't exactly grow up in humble circumstances. His childhood home was a 5,660-square-foot luxury home in Michigan, situated on 5.5 acres that includes 5 bedrooms, 7 bathrooms, 5-car garage, along with a partially finished walkout and guest house. There's also a 3 stall horse barn, regulation tennis court and inground pool. The 22-room house was renovated in 2004, and it also has a hot tub and a wet bar.

Gallery Credit: Sterling Whitaker

Kid Rock Trivia: 16 STUNNING Facts, Ranked Level 1 to 100

As the levels get higher, the facts get wilder! Here are 16 things you probably didn't know about Kid Rock, including the truth about his son, why he divorced Pam Anderson and whether or not he's friends with Eminem.

Gallery Credit: Billy Dukes

More From 100.7 WITL