John Mayer celebrates 60 years of the Grateful Dead in SF, honoring Jerry Garcia and jamming with Trey Anastasio during Dead & Co.’s shows.

John Mayer thanked his fellow Dead Heads for accepting him as part of the Grateful Dead's impact on music over the past 60 years. Mayer performed alongside Dead & Company Friday, Aug. 1, through Sunday,

The guitarist was feeling the warm and fuzzies following the legendary jam band's three-night run in San Francisco's Golden Gate Park over the weekend.