Musical Cryptograms: Five Scores that Contain Hidden Messages

Imagine transmitting a secret message by using the pitches (from A to G) that are embedded in a musical score. It’s been the subject of mystery novels and television shows as well as Philip Thicknesse’s 1772 book, A Treatise on the Art of Deciphering, and of Writing in Cypher: with an Harmonic Alphabet. During the Second World War, codebreakers considered the possibility that German and Japanese spies might use musical notes as a …

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