The Kline Opera House (now the Cortland Opera House) is rumored to be haunted, with reported activity including disembodied footsteps and singing, and the feeling of "strange visitors" that are sometimes heard as music, not applause, creating a sense of loneliness. One paranormal group from Salem investigated the site for two years and described the visiting spirits as "happy, not dark". Visitors have reported hearing footsteps echoing through the building when it is empty. Disembodied singing has been heard in the building, even when it's unoccupied. Some people describe hearing what they perceive as "strange visitors" who might be family or members of the Kline family, the building's original owners. The feeling of loneliness has been associated with the building, where music is sometimes heard, but without any accompanying applause, suggesting an audience that isn't there.