Take in Saturday night's vibes below:

Train of cars making their way to parking on the University of Colorado's campus for the first night of four Dead and Co. shows at Folsom Field.
Evan Semón Photography

Grateful granddad (left) with new grandbaby and family rock the North End zone for the show.
Evan Semón Photography

John Mayer, master of the guitar electrocution face, kicks off the show with a cover of Sam Cooke's "Let the Good Times Roll."
Evan Semón Photography

The Jerry abides. The presence of Jerry Garcia has always been felt at these shows. The founder of the Grateful Dead has himself been dead for 28 years come August 9.
Evan Semón Photography

Proper attire when the Dead & Co. kicks off its three-night run in Boulder on Shabbat.
Evan Semón Photography

Mickey Hart and Bob Weir are the last two living Grateful Dead members touring.
Evan Semón Photography

Bob Weir leading the band into its third song of the night, a cover of Howlin’ Wolf's "Smokestack Lightning."
Evan Semón Photography

John Mayer has come a long way with Dead & Company's music after only starting to listen to the band in 2011.
Evan Semón Photography

A section of the field was designated just for dancing. A new dance leader took front and center.
Evan Semón Photography

Moonrise over Folsom Field at Dead & Co.'s first concert Saturday night, kicking off its "Final Tour" run in Boulder.
Evan Semón Photography
Dead & Co. returns to Folsom Field at the University of Colorado Boulder for a final night on Monday, July 3; get details here.