Former members of the Allman Brothers Band and Gregg Allman Band will gather tomorrow, December 23 to honor the late Gregg Allman and Butch Trucks in song. Scheduled performers for the Brothers & Sisters Annual Holiday Jam include Scott Sharrard, Marc Quiñones and Berry Duane Oakley, son of the ABB’s founding bassist. Melody Trucks Band, a project led by Butch Trucks’ daughter, will supply opening duties.

The event will take place at The Funky Biscuit in Boca Raton, Fla., a venue where Gregg Allman made headlines in 2016. The ABB legend shocked fans when he dropped in on a Sunshine Music Festival after-party unannounced, leading Devon Allman, Ben Sparaco and others in versions of “Statesboro Blues” and “Stormy Monday.”

See a video from the 2016 surprise performance below: