Boston's mayor blamed a popular and heel-kicking dance - "The Charleston" - for triggering the catastrophic collapse of the Pickwick nightclub in July 1925.
Forty-four people died when the floors of the Prohibition-era venue gave way.
Survivor Rocco Carparto - a professional singer known as ``Teddy Williams'' - watched the disaster unfold from inside.
"Just how it happened I don't know and I guess nobody does," Carparto recalled. "I made a jump for the stairway. But the stairway had dropped and I tumbled down."
Investigators determined chronic structural problems brought down the Pickwick - not the heel-kicking.