Phish guitarist Trey Anastasio has been careful to emphasize that his role in the upcoming Grateful Dead Fare Thee Well concerts is not to replace the dear, departed Jerry Garcia but, for all intents and purposes, that is exactly what he is doing. As that is no small task, Anastasio has been putting significant effort into preparing for those concerts, with the latest being a two song public performance with Dead bassist Phil Lesh.

Anastasio joined Lesh and his band at the bassist’s San Rafael, CA restaurant-cum-performance space Terrapin Station on the Dead classics “Bertha” and “Goin’ Down the Road Feelin’ Bad,” with the latter being filmed and uploaded to YouTube. Lesh’s son Grahame also contributed vocals and guitar.

Anastasio, keyboardist Jeff Chimenti and pianist Bruce Hornsby will join Lesh and the other surviving members of the Dead for two shows in Santa Clara, CA on June 27 and 28 and the three (supposedly) final Grateful Dead shows in Chicago over Fourth of July Weekend. Watch Anastasio and Lesh play “Goin’ Down the Road Feelin’ Bad” below: