The ???Hard Day???s Night??? Mystery

It took Dalhousie University professor Jason Brown six months and some advanced mathematical analytical techniques to crack the code behind one of the most mysterious sounds in music: the “prraaaaaangg” sound at the beginning of the Beatles’ “Hard Day’s Night.”

“The Chord:”

via wired.com. Found via Tim Harford’s “More or Less” radio show.

Reverse engineering the unmistakable introduction sound by the Beatles using Fourier transforms: the secret is a piano chord behind the 3 guitars.

The method has since then been built into software.

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