After 35 years, Broadway's longest-running show is taking a bow. The Phantom of the Opera has sold more than 20 million tickets and grossed around $1.3 billion. MarketWatch’s Charles Passy explains what made it one of Broadway’s biggest hits. Further Reading: -He’s Seen ‘The Phantom of the Opera’ 13,000 Times  Learn more about your ad choices. Visit megaphone.fm/adchoices