Phillip Glass - Einstein on the Beach (1975) Knee 5 Click here to listen Click here to watch Einstein on the Beach Nerd Stuff Einstein on the Beach is an opera composed by Phillip Glass and originally directed by theatrical producer Robert Wilson. The basic idea of the opera was to portray Einstein as an incredible historical figure. However, what made this portrayal unique and interesting was their decision to not have a distinct plot. Rather, they used recognizable symbols from Einstein's life throughout the opera to get the audience a sense of some theme. The music that the audience begins to associate with Einstein follows a circular formula (both additive and subtractive) that constantly is on the edge of resolution, but almost never resolves. The opera is structured in four acts. Before each act, and after the final there comes a Knee Play. The Knee portion of the title is referring to a human knee. The joint in the knee joins the two major portions of the leg. The ...