I believe Jennifer Holliday did sign it, kelly. Which is why she can't sue or claim ownership of the character, the vocals, dialog, or anything else.
She can go around whining that it's "MY" song, and "MY" interpretation, riffs and whatnot... but she can't legally do anything because of that clause.
That's what happens when an actor "creates" a role in any original Broadway production. Of course actors add things into the character and the final performance. But legally, it isn't theirs. They can't claim ownership rights.
I remember talking to one of the original orphans from Annie years ago, who said they added some improvised lines of dialog one day that she said during rehearsal. They got laughs so they stayed in. They're in the licensed script now, and locked forever in the show.
The same is true for Second City or Saturday Night Live. The characters created for either are legally owned by Andrew Alexander (SC) or Lorne Michaels (SNL). I used to work for Second City and remember the discussions about it.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22