an Entity references as follows:
"Play a Simple Melody" is a song from the 1914 musical, Watch Your Step, words and music by Irving Berlin. The show was the first stage musical that Berlin wrote. It ran for 175 performances at the New Amsterdam Theater in New York City. The one song from it that is well-remembered today is "Play a Simple Melody," one of the few true examples of counterpoint in American popular music — a melody running against a second melody, each with independent lyrics. Two other of Berlin's so-called "double" songs are "You're Just in Love," and "An Old-Fashioned Wedding".