Take that, sweet mystery of rock 'n roll. Math has... ...ck: the mysterious "A Hard Day's Night" chord .Dalhousie University math professor Jason Brown a...
https://www.neatorama.com/2009/01/02/the-holy-grail-of-rock-a-hard-days-night-chord-solved-by-math/
The Holy Grail of Rock, "A Hard Day's Night" Chord, Solved by Math
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