Philip Glass's live performance of "Glassworks," St. Louis Art Museum, 1973. Snatches of the uniquely interesting piece were promoted on local FM stations for two weeks. The Auditorium audience started with about 150 people in attendance. The walk-out began gradually 5 minutes into the piece. I stayed about 20 minutes with maybe 8 people scattered about, when I realized my high pain threshold was deteriorating and the shear boredom of the repetitive arpeggios was driving me insane. The composer, playing keyboard and directing from the bench with an occasional nod, gave no indication that corrections should be made nor that there was, indeed, an audience or a problem. To this day, I consider this piece one of the most god-awful examples of the genre called, Minimalism. I guess, if you are a composer, you have to start somewhere.