Back on August 15, 1965, the Beatles became the first musical performers to hold a concert at Shea Stadium.
It was no small affair and it was one of the first times (some say it was the first, but I'm not inclined to verify that fact) a rock group had played in a stadium of that size. A crowd of over 55,000 attended. But it ushered in an era of concerts where lots of people attended and sat in places where they could see or hear little of what was being played.
A 10-minute video of parts of the concert is below:
And who will be the last musical act to play Shea Stadium? Billy Joel.