Merce Cunningham — American Dancer born on April 16, 1919,

Mercier Philip "Merce" Cunningham was an American dancer and choreographer who was at the forefront of the American modern dance for more than 50 years. He is also notable for his frequent collaborations with artists of other disciplines, including musicians John Cage and David Tudor, artists Robert Rauschenberg and Bruce Nauman. Works that he produced with these artists had a profound impact on avant-garde art beyond the world of dance... (wikipedia)

My dance classes were open to anybody, my only stipulation was that they had to come to the class every day.
I was told that I had to give grades to the students, which I wasn't particularly interested in doing.