The Zuelke Building in Appleton, WI is rumored to be haunted by Irving Zuelke, with reports of hearing piano sounds and seeing a ghostly figure. Piano music The sound of piano music is occasionally heard, possibly linked to the building's history as a former music store. The sound of pianos crashing through the building has been reported. This may be a reenactment of a fire that occurred in the 1920s at the original Zuelke Music store, which preceded the current structure. A ghostly figure A ghostly figure, said to be Irving Zuelke himself, has been seen in the building. Zuelke was the owner who rebuilt the structure in the early 1930s after the original building burned down.