Summer Camp will return to Chillicothe, IL, later this month for a weekend that will feature another round of Matt Butler’s revolving-door jam session Everyone Orchestra, which will be comprised of members of Umphrey’s McGee, moe., Los Lobos and more.

Set to join Butler at his Sunday show, which will be part of Summer Camp’s late-night Red Barn offerings, will be Umphrey’s McGee’s Ryan Stasik, moe.‘s Al Schnier and Vinnie Amico, Roosevelt Collier, Los Lobos’ Steve Berlin, Maddy O’Neal, Mike Dillon, Papadosio’s Sam Brouse, The Terrapin Family Band’s Ross James, Mother Nature’s Klevah Knox and T.R.U.T.H., and John Craigie.

The Everyone Orchestra Summer Camp show will only be available to fans who participate in the Make A Difference treasure hunt.

Summer Camp is set for May 25–27 at Chillicothe’s Three Sisters Park with a lineup featuring moe., Umphrey’s McGee, Phil Lesh & The Terrapin Family Band, Diplo, Slightly Stoopid, Cypress Hill, STS9, Greensky Bluegrass and many more. All festival information can be found here.