Here from 1975 is a commercial for Bob Fosse's musical, Pippin. This was one of the first times a Broadway show had ever been advertised on TV and it was successful enough that others tried it afterwards…with mixed results.
Scott Marinoff, who often sends me wonderful links to share with you, asked that I poll the house and ask this question: Can anyone identify the announcer doing the voiceover? Write me if you can.
And here's another commercial for the show. I can imagine this one being more successful in driving people to the box office. I can also imagine Fosse saying to the producers, "Let's see if we can get some heterosexuals into the theater." The man is Michael Rupert and the ladies are (I think) Sandahl Bergman and Kathrynann Wright…