This Thursday the second annual Lockn’ Festival will begin at Oak Ridge Farm in Arrington, VA. Phil Lesh & Friends, Wilco, The Allman Brothers Band, Tom Petty & The Heartbreakers and Umphrey’s McGee are just a few of the acts set to perform at this year’s festival. For today’s Flashback column, we want to look back at one of our favorite performances from last year’s inaugural Lockn’.

The inaugural Lockn’ Festival made no qualms about its target audience -jam fans. With a lineup reminiscent of the first Bonnaroo, the Arrington, VA festival brought together many of the jam community’s top-drawing acts and two offshoots of the scene’s biggest bands -Furthur (Grateful Dead) and Trey Anastasio (Phish). On September 7, 2013 those two acts finally collaborated when Trey sat in with Furthur at Lockn’, marking his first appearance with the post-Jerry band, which features Grateful Dead guitarist Bob Weir and bassist Phil Lesh.

Anastasio was on hand for a set from his solo band, who were a replacement for Neil Young & Crazy Horse. Young and his band had to cancel their appearance at Lockn’ due to guitarist Frank “Poncho” Sampedro’s hand injury. Furthur kicked off their Saturday set by performing all of the Grateful Dead’s landmark 1970 album, Workingman’s Dead. Trey emerged for the last song off that album, “Casey Jones.” The guitarist stuck around for and sang lead on a rollicking “Bertha,” which gave way to “Truckin’.” “Truckin'” found Trey trading intense licks with both Lesh and guitarist John Kadlecik as the jam developed. Once the ensemble moved beyond “Truckin'”s structure, Kadlecik led them through an impressive transition into “The Other One.” Keyboardist Jeff Chimenti shined during the “Other One,” thanks to his funky synth work on the psychedelic workout. The long Trey/Furthur summit continued with “Viola Lee Blues,” the first song the guitarist performed with Lesh as a member of the Phil and Phriends band at The Warfield in April of ’99. Anastasio showed off his ability to play well with others in the short-but-sweet “Viola” and by the time a scorching “Scarlet Begonias” > “Fire In The Mountain” started was sporting a massive grin from ear to ear. All in all Trey Anastasio sat in on seven songs for his Furthur debut before “Fire” brought the evening to a close.

Watch video of Trey sitting in with Furthur on “Fire On The Mountain”:

Stream Z-Man’s recording of Trey Anastasio sitting in on “Truckin'” > “The Other One,” “Viola Lee Blues” and “Scarlet” > “Fire” from Lockn’ ’13: