Which groundbreaking advertising technique saved the Broadway musical 'A Chorus Line' from closing early in the 1970s?

How well do you know the innovative advertising techniques that transformed struggling Broadway productions into legendary successes? This trivia question explores one of the most famous marketing pivots in theater history that saved a production from early closure and turned it into a long-running phenomenon. Test your knowledge of how creative advertising can dramatically change a show's trajectory in the performing arts industry!

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The revolutionary 'Singular Sensation' campaign featuring the iconic white line of dancers against a black background
Celebrity endorsement videos featuring major Hollywood stars praising the production
The first Broadway show to offer a 'pay what you can' ticket pricing model
The introduction of the first theater subscription service with guaranteed premium seating