Last week, Bob Weir and Rob Wasserman played an extremely rare duo show a Stop the Spray benefit in Sausalito, CA. The old friends, who co-founded RatDog in 1995, ran through a number of acoustic material, including a cover of Bob Dylans

Maggie’s Farm, Bird Song and Ashes and Glass. Ramblin’ Jack Elliott also joined the pair for K.C. Moan, Friend of the Devil and Salt Pork West Virginia. According to the RatDog fan site Ratdog.org, the benefit marked only the fourth time in the past three years that the two have shared the stage and the first time Weir and Wasserman have performed as duo in over three years. RatDog will kick off an extended summer tour at Eugene, ORs Cuthbert Amphitheatre on June 20.