@nprofile1q... I used to do short-term security/stage hand stuff for my Dad, and one of the bands we were hired to assist with was the Dead - Only audience I ever saw a nude couple making love right in the middle of, middle of the day... Pretty sure they were in the final part of the act, based on the energy as I ran by :)
And I was not a fan of the music then, so I did not pay much attention to the music, just my tasks.
Memories :)