this song is featured in the 1951 film i’ll see you in my dreams starring danny thomas and doris day. it is written in 1915 by gus kahn (whose life story is told in the film and was played by thomas), with the music by egbert van alstyne. by far this would be the oldest song i’ve ever listened to; the previous oldest song i’ve heard, if you were the only girl in the world, was published in 1916.
by the way, danny thomas and doris day were superb in their portrayal of gus kahn and grace leboy kahn. that’s all i can say. 🙂