Theatrefanboy1 said: "I’m curious of Broadway shows that had significant contributions from a ghost writer. I’m vaguely familiar with Harvey’s contributions to hairspray but would love to hear what they were. Any other shows similar?"
Harvey writes about this in his memoir. Basically, a bit after he was signed on to play Edna, he was offered to sit in on the writing team (just like Christian Borle recently in Some Like It Hot) but he actually refused. However, they weren't actually giving cast members access to the full script of Hairspray. This was a problem for Harvey, who felt the show's structure failing and the writing team, even after Thomas Meehan was brought on to revise it, struggling. He said he would quit the show unless he could see the script. He got a call from Marc Shaiman, and he explained this. Marc faxed him the script. Harvey sent him back a revised script. Finally, they decided to sign on Harvey to ghostwrite the show, structure it, doctor it. Harvey Fierstein is a very good revisionist and adaptational writer, and Harispray's second act was essentially suggested and executed by him. A lot of people like to say he "wrote Edna dialogue", which is strictly inaccurate. He improvised some Edna dialogue that got put in the script, which is a very common thing for actors to do. But Harvey Fierstein actually did, in fact write Hairpsray. Not to say he was the main writer. But, as Meehan has implied and Fierstein has stated in his memoir, he was more of a contributer than Thomas Meehan. That's the story.