Maltby, Jr. has stepped into the role of MacMillan, replacing Walter Charles, who left the production "due to an unexpected conflict."

The mounting of the musical, which features a book by John Weidman, lyrics by Maltby, Jr. and music by David Shire, marks the New York premiere of the script and score created by the authors for the show’s national tour, including eight new Maltby and Shire songs.

Directed by Michael Unger, with music direction by Eric Svejcar, the cast also features Tony Award nominees John Tartaglia and Kerry Butler with Elainey Bass, Whitney Brandt, Trista Dollison, Liam Forde, Tom Lucca, James Ludwig, Rhyn McLemore, Janet Metz, Julianna Rigoglioso, Jeremy Shinder and Hayden Wall.

"Josh Baskin is just like any other angst-ridden teenager—he can’t wait to grow up," according to press notes. "Too bad you have to get through adolescence first. But when Josh makes a wish to be 'big' at a carnival and wakes up the next morning in the body of a 30-year-old man, he learns how complicated adulthood can be."

The limited engagement of Big plays The York Theatre Company at Saint Peter’s (entrance on East 54th Street, just east of Lexington Avenue). Tickets are priced at $45 and are available online at yorktheatre.org, by calling (212) 935-5820, or in person at the box office.

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Mufti means “in street clothes, without the trappings associated with a full production.”