Last night in San Diego at the famous Humphrey's By The Bay, three members of the alt/Americana/roots band Greensky Bluegrass joined Bobby Weir & the Wolf Pack for three songs to kick off the band's second set.

Paul Hoffman (mandolin), Michael Bont (banjo) and Anders Beck (dobro) joined the Grateful Dead legend for "Friend of the Devil," "Stealin’" and a spirited take on "Cassidy."

Greensky will kick off their fall tour with a two-night stand at Humphrey’s before working their way up the coast with stops at San Francisco’s The Warfield, Portland’s iconic Crystal Ballroom and more. Tour info and up to date news can be found at greenskybluegrass.com.