According to This Day In Music, April 27th of 1974 saw a very interesting lineup of performers play a FREE concert in Connecticut:
1974, a free afternoon event was held in the parking lot of the University of Connecticut, Ice Hockey Arena in Storrs. The four acts that appeared, Aerosmith, Bruce Springsteen, Fairport Convention and Fat Back. Springsteen then went on to play another gig that evening at the University of Hartford in Connecticut.
That’s a show that would never happen today outside of maybe a festival setting like Bonnaroo. Just for fun, and in honor of this amazing bit of musical history trivia, here’s a video each from the four acts involved: