A decade ago some hackers went into the Boston Museum of Fine Arts and replaced the guided tour audio with their own content. The identity of the hackers remains a close guarded secret and one of Boston's biggest unsolved mystery's. Investigators could only agree on one thing: that the voice in the tape did not belong to Lev Davidovich Bronstein.
I got my hands on the audio file back in 1999 and during one of my visits to MIT that year I saw the news paper coverage of the event. I vaguely remember the news article, but it described the reactions of the visitors and featured interviewed with shocked citizens.
This is the recording.