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

Fans of the Grateful Dead are pouring into San Francisco for three days of concerts and festivities marking the 60th anniversary of the scruffy jam band that came to embody a city where people wore flowers in their hair and made love,

The walk up to the park was an event unto itself. RVs decked out in Dead murals lined the Panhandle, and a few blocks later JFK Boulevard was the site of nearly 100 vendor booths, selling everything from cheeky Ts mashing up the Steal Your Face logo with iconography of Southern country store chain Buc-ee's,