Sometimes a concert will stand out because of something that happened during the show...some have posted about this.
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Yeah, for sure ! We experienced a couple of those shows, like:
August 1974, the CSNY show at Roosevelt Stadium in Jersey City....during the set, Ron Delsner (or maybe it was John Scher, it was either one of those promoters) came to the stage, and had a brief conversation with the band. A few seconds later, Graham Nash made the announcement that President Richard Nixon had just resigned his office, disgraced by the Watergate affair.
The crowd went apeshit, and the band launched into "Long Time Gone"....
In the late 1980s, Sting (!) appeared on stage with Frank Zappa, and absolutely stunned the audience with a superb version of "Murder By Numbers"....
Then, another crazy Roosevelt Stadium show, it was Garcia`s 30th birthday, and both the group and the audience were amped up a bit more than usual. The Dead played for several hours, then had a really wild intermission show, with a martial arts/mystic type of deal, with a guy laying on a bed of nails, with another dude breaking cement blocks on the first guy`s chest with a sledgehammer. This proved to be a bit too much for some folks in the audience, there were a few freakouts. It was either The Band or The New Riders that were also on the bill, they put on a good set.