In a restaurant so it was hard to hear, but apparently the song was entitled something like "That's My Story and I'm Sticking to It." At first the vocal sounded like Joe Tex' "Ain't Gonna Bump No More" but I decided it wasn't him. Other songs being played at the time seemed to range from the early 70s to early 80s, so I assume this one was from the same era.

So who was it?