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The original was posted on /r/todayilearned by /u/Abigail123 on 2024-07-25 20:43:56+00:00.

Original Title: TIL that in the 1630s there was a song only played in the Sistine Chapel. The Vatican kept the composition of “Miserere Mei, Deus” secret for 140 years until 14-year-old Mozart listened to it 2 times, transcribed it from memory, and produced one of the earliest records of musical piracy.