I think that Stephen Sondheim knew Johnathan Larson and they helped each other. Heck, Stephen Sondheim might've even wrote the lyrics for Rent, had Johnathan said he could do it on his own. Seriously.
MARGARET: "Clara, stop that. That's illegal." - The Light in the Piazza
"I'm not in Bambi and I'm not blonde!" - Idina Menzel