Phil Lesh will welcome a host of special guests at this year’s Lockn’ Festival with two unique lineups for both of his sets on August 27 and 28 including members of Phish, Joe Russo’s Almost Dead, The Infamous Stringdusters and more.

On August 27, Lesh will welcome Phish’s Page McConnell and Jon Fishman as well as Joe Russo, who will team with Fishman in the double-drum spirit of the Grateful Dead. Rounding out the lineup are budding bluegrass act and current Ryan Adams collaborators The Infamous Stringdusters.

The following night, Lesh will team with more familiar friends as Chris Robinson Brotherhood will take the stage with the bassist for a set that will include a sit-in from Gary Clark Jr., who will be making his first foray into the world of the Grateful Dead.

The meeting between members of Phish and Lesh marks the first time Jon Fishman has played with the bassist outside of his lone sit in with Phish at Shoreline in 1999. McConnell has also not performed with Lesh since the GRAB/Phil tour in 2006.

Lockn’ kicks off August 25 in Arrington, VA. Tickets are available here.