Sly and the Family Stone, early ‘70s. The start of the show kept getting delayed. We waited probably two hours. When it did start, Sly was so blitzed he was incomprehensible. My date had to be home by 11. We pushed that a little bit, but heard about 30 minutes of music. My friends said he finally got booed off the stage after a total of about 45 minutes. It was a disaster all the way around. One great thing about concerts back then was if there was good crowd interaction, the band would keep coming back for encores. These days it’s all choreographed. An encore is just built into the show, then you’re done no matter how much the crowd cheers, generally about 11 pm. When the house lights come on, show’s over.