A fan died while dancing in the crowd at Grateful Dead offshoot band Dead & Company's concert at San Francisco's Golden Gate Park over the weekend, reports say.

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.

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

San Francisco welcomed Grateful Dead offshoot Dead & Co. back Friday night for a hell of a birthday party. The first night of a three-night Grateful Dead 60th anniversary residency took over the Polo Fields of Golden Gate Park,

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,

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.

Preparations are already underway for this weekend’s massive Dead & Company shows in San Francisco’s Golden Gate Park. The three-day concert event kicks off on Friday and is expected to draw some 60,000 people a day to the park this weekend.

Fred Cothard, 54, a carpenter from Michigan, was attending the Grateful Dead concert with his girlfriend, when he suddenly collapsed while dancing.

Fred Cothard, who owned a construction business since the 1990s, collapsed at Golden Gate Park while attending the show with his partner.