On Your Toes (1936) is a musical with a book by Richard Rodgers, George Abbott, and Lorenz Hart, music by Rodgers, and lyrics by Hart. It was adapted into a film in 1939. While teaching music at Knickerbocker University, Phil "Junior" Dolan III tries to persuade Sergei Alexandrovich, the director of the Russian Ballet, to stage the jazz ballet Slaughter on Tenth Avenue. After becoming involved with the company's prima ballerina Vera Barnova, Junior is forced to assume the male lead in Slaughter. Trouble ensues when he becomes the target of two thugs hired by Vera's lover and dance partner to kill him.