The award goes to the playwright, although production of the play is also taken into account. In the case of a musical being awarded the prize, the composer, lyricist and book writer are generally the recipients. An exception to this was the first Pulitzer ever awarded to a musical: when Of Thee I Sing won in 1932, book authors George S. Kaufman and Morrie Ryskind, as well as lyricist Ira Gershwin, were cited as the winners, while composer George Gershwin's contribution was overlooked by the committee. The reason given was that the Pulitzer Prize for Drama is a dramatic award, and not a musical one. However, by 1950 the Pulitzer committee included composer Richard Rodgers as a recipient when South Pacific won the award, in recognition of music as an integral and important part of the theatrical experience. 
Daniel Mendelsohn: Daniel Mendelsohn is an internationally bestselling author, critic, and essayist. His essays and reviews appear frequently in The New Yorker and The New York Review of Books, and he has been a books and culture columnist for the New York Times Book Review, New York magazine, and Harper’s. His books include The Elusive Embrace, a reflection on sexual identity and classical literature, which was a Los Angeles Times Best Book of the Year; the international bestseller The Lost: A Search for Six of Six Million; a translation, with commentary, of the complete poetry of Constantine Cavafy, shortlisted for the Criticos Prize (UK); and two collections of essays, How Beautiful It Is and How Easily It Can Be Broken (2008) and Waiting for the Barbarians: Essays from the Classics to Pop Culture (2012). His awards include the National Book Critics Circle Award (US), the National Jewish Book Award (US), the Prix Médicis (France), and the American Academy of Arts and Letters Prize for Prose Style.