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The movie, Yesterday, imagines a world without the Beatles. But the coming of the Beatles was foreshadowed by a “band” that existed 25,000 years ago, who honed their musical skills inside a cave just as the Beatles did nearly sixty years ago inside the Cavern Club, a brick-lined cellar underneath Mathew Street in Liverpool that was used as an air raid shelter in World War II.

During the Upper Paleolithic era, tribes living in limestone caves like Pech Merle in the Midi-Pyrénées region of France painted red dots to deliberately mark the places inside the cave that had special acoustical properties where they could “excite the resonances” or mimic the sounds of the animals also painted on the cave walls. Physics Professor Emeritus Steven Errede of the University of Illinois, writing about the research conducted by researcher Iegor Reznikoff of the University of Paris X in Nanterre, reports:

These underground caverns function as immense echo chambers — their naturally-formed vaults are capable of producing sounds similar to those that can be heard in the most famous cathedrals and chapels in Europe, such as the Baptistry di Pisa in Italy.

Perhaps these occasions were the world’s first “rock” concerts — singing and playing musical instruments inside of a gigantic, complex, multiply-connected organ pipe, exciting complex resonances and echoes as they sang and played! They were actually inside a naturally-formed musical instrument of gigantic proportions!

The reverberant/resonant acoustical properties of these caves must have seemed mystical, if not magical (or even supernatural) to them, not having any quantitative understanding of these physical phenomena.

Between 1961 and 1963, the Beatles made a reported 292 appearances at the Cavern. During their residency underneath Mathew Street, the Beatles mastered the art of creating three-part harmonies. While harmonies were somewhat common in pop music at the time, it was rare to find songs with three-part harmonies driven by the pulsating beat of a rock ’n’ roll band. This became one of their differentiators, to use a marketing term, that helped them evolve from being a ragtag band that some Liverpudlians mistakenly thought was a German band to an international phenomenon on the verge of re-writing rock ’n’ roll history.

Professor Errede reports of visiting the Basilica di Pisa in Italy, and listening as the cathedral guard sang the individual notes of a C-Major chord — C-E-G — the same triad structure that was often used by the Beatles’ in singing their three-part harmonies, and how those simple musical notes circulating inside the cave-like basilica dome became something completely different.

The sound of this human-generated major triad evolved from what initially started off as recognizably human into a gloriously complex, temporally and spatially-changing sound that was beyond human.

By all accounts the acoustics of the musty Cavern Club would never be mistaken for the acoustics found inside Paleolithic caves or the great cathedrals of Europe, but the reverb effect of playing in that brick-lined cellar undoubtedly energized the Beatles’ music and the fans listening to them. While the low-fi quality of this video could never capture the “mystical” experience that occurred during that special time in Liverpool, it at least lends a glimpse of what it must have been like. Check it out

Who, what, when, where, why, how.

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