On Broadway, Off Broadway, in special events and out of town, living authors are collaborating with dead ones. Some otherwise viable shows, like “Annie Get Your Gun,” need surgery because their racial or gender assumptions are now unacceptable. Others, like “Show Boat,” are merely falling out of copyright, with heirs eager to find a way to remonetize their property. And some — well one — are “Here We Are,” the musical Stephen Sondheim was working on when he died in November 2021. Directed by Joe Mantello and with a book by the comic playwright David Ives, it will reflect a very unusual collaboration indeed.

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Persons: Amber Ruffin, Oz, Richard LaGravenese, Daniel Koa Beaty, John O’Hara’s, “ Pal Joey ”, Rodgers, Hart, John Weidman’s revisal, Annie, Stephen Sondheim, Michael Paulson, Sondheim, Luis Buñuel, ”, Joe Mantello, David Ives