This song had an amazing journey. It started as the overture to a light opera written by Victor Herbert, the Irish-American turn-of-the-century composer. People liked it so much, they said that someone ought to write lyrics to it and make it into a song. And, someone finally did. The great lyricist Al Dubin did in 1939, which was 15 years after Victor Herbert's death.
And the song is Indian Summer with some of the most inspired and poetic lyrics ever set to music- the sad and haunting music of Victor Herbert. What a collaboration, and what a song.