. ♪ >> so i would listen to buddy holly and gene vincent, jerry lee lewis, all the great rock 'n' rollerst was like a new language for us. the power of the jukebox, there's nothing quite like it. >> the beatles took a bunch of those strains, the everly brothers from the '50s, was a big influence for them. with the harmonies. ♪ wake up, little suzy, wake up ♪ >> so the beatles of liverpool are taking this pop sound but putting their own spin on it. ♪ >> what is the sound? how does it differ from other rock 'n' roll? >> it just happened all of a sudden hundreds of rock groups from liverpool all made records and it was a bit more like the original rock 'n' roll than the stuff they've had over the last few months. >> initially, there was no tradition of great british bands conquering america. that had not happened. it's that moment where everything turns. ♪ >> there's no single moment that more embodies the moment when rock 'n' roll became the province of teenagers. something that you would not just love, but that you would go crazy for. >> here's the beatles! ♪ can't buy me love >> the beatl