Trey Anastasio of Phish, Billy Strings and Sturgill Simpson were among the special guests to join the band over three nights of concert and amid a city-wide celebration.

While only two of the original Grateful Dead band members are in Dead & Company, that didn't matter to the 60,000 thrilled fans in Golden Gate Park.

Trey Anastasio, Sturgill Simpson and Billy Strings joined the Grateful Dead offshoot for three San Francisco shows celebrating 60 years of Grateful Dead music.