The Beatles played in Chicago on August 20, 1965. I was there and this is my ticket stub. Time to pass it along to someone who will also treasure it. To be honest, as I remember it, you could not hear the band clearly at all.
The screaming started as soon as John, Paul, George and Ringo stepped out into the open and did not stop throughout the concert. Still, the memory of it all makes me smile, even today.