Henry, Sweet Henry is a musical with a book by Nunnally Johnson and music and lyrics by Bob Merrill.Based on the novel The World of Henry Orient by Johnson's daughter Nora and the subsequent film of the same name, the plot focuses on Valerie and Marian, two wealthy, love-struck teenagers who stalk an avant-garde composer and aging philanderer.After twelve previews, the Broadway production, directed by George Roy Hill and choreographed by Michael Bennett, opened on October 23, 1967 at the Palace Theatre, where it ran for 80 performances.