Frank Warshauer was my grandfather - - He passed on when I was 4 years old, but the family story is that he wrote Dinah and his good friend Harry Akst borrowed it, I think they said for the Cotton Club Review and it ended up with his name on it... now, it is possible that there is another side to this story that might legitimize Mr. Akst name on the composition, but I don't know of any other version of this story...