While she’s served as Music Theatre International’s top lawyer for a decade, Deborah Hartnett now has a title that more accurately reflects her starring legal role at a theatrical licensing agency that has expanded its presence on the world stage in recent years.

New York-based MTI announced Tuesday that it had promoted Hartnett from director of business and legal affairs to general counsel and senior vice president, effective Jan. 1. The group represents composers, lyricists and authors of hundreds of musicals, from “West Side Story” and “Annie” to “The Producers” and “Les Misérables.”