Today's OED antedating: "sob song"

Sob song, musical genre of sad stories sung ("sob," n.1, sec 3 (b), first use cited 1927): Untitled item by Franklin P. Adams, New York Tribune, July 12, 1915, p 9, col 1: "Two or three years ago we reprinted, with great pleasure to ourself, at least, a lot of the old-time sob-songs."