Okay, the person with the secret was John Cage. And, the title refers to the game show on CBS, broadcast in 1960. Yes, there was once a time when a figure like John Cage appeared on TV, on CBS, and performed one of his works. Outside of South Park and the Simpsons, when have you seen major composers on TV.?(Glass appears, as an animated character [not his voice] in South Park, and is mentioned a few times on the Simpsons.)
Anyway, back to Cage: you can see it here. Enjoy!