A dance group performing to Terry Riley’s In C. I do not remember the name of the dance group or orchestral group. There was an orchestra member in the pit who appeared to be either intoxicated or high because he kept doing weird things during the performance. But the most memorable part of the evening occurred as the auditorium was filling. In walked an attractive young woman followed by an entourage of males. She was wearing an elegant white evening gown with a transparent top. She sat a bit behind me and on the other side of the auditorium, so I could not continue to stare at her. But I was content watching the performance (dancers and musicians) and listening to the music (In C is one of my favorites). This was around 1970, in San Francisco.