 Hart continued to write plays after parting with Kaufman, such as "Christopher Blake" (1946) and "Light Up the Sky" (1948), as well as the book for the musical "Lady In The Dark" (1941), with songs by Kurt Weill and Ira Gershwin.However, he became best known during this period as a director.Among the Broadway hits he staged were "Junior Miss" (1941), "Dear Ruth" (1944) and "Anniversary Waltz" (1954).