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It was just after 7 pm July 2 when they broke the silence with "Bertha."

By the time Dead & Co. wrapped up a two-night Folsom Field stand with “U.S. Blues” the next night — the first concerts at CU’s football stadium since 2001 — they’d made the kind of impression entertainers aim for.

"The Dead & Company show last Saturday. Still on my mind!" Molly Conner (@McButtaaa) tweeted two days later.

Altogether, more than 50,000 people attended the band’s two July 4 weekend shows at Folsom Field. (See photos at right.)

Dead & Co. is made up of three members of the Grateful Dead — Bob Weir, Mickey Hart and Bill Kreutzman — plus John Mayer, with bassist Oteil Burbridge and keyboardist Jeff Chimenti.

In all, the band played 34 songs over the two nights, mainly Grateful Dead tunes, including "Uncle John’s Band," "Fire on the Mountain," "Samson & Delilah" "Scarlet Begonias" and "Not Fade Away."

The band tweeted a for both nights.

Kreutzman was the only member of the band wearing a tie-dye t-shirt on Saturday — but backstage the other five all tried on Buffs football jerseys.

Photos by Lance Carl, Peter Burke and Michael Goldman