Peabody Awards · CC BY 2.0

A playwright and director who reshaped what a Broadway musical could be about, winning the Tony Award for Best Book of a Musical three times — for Into the Woods, Falsettos, and Passion — and the Pulitzer Prize for Drama for Sunday in the Park with George. His long collaboration with Stephen Sondheim produced some of the form's most structurally ambitious work, trading conventional plot for meditations on art, family, and fairy tale.