It is 50 years since The Beatles released their first single - a moment that changed the music world forever.
Half a century ago, the mop-top Liverpudlians stormed onto the world stage with Love Me Do, and love them they did.
The Beatles became not just a band but a phenomenon.
For the thousands of screaming, mainly teenage girls, it was beyond the music - they were everything.
Beryl Marsden was a young singer, a support act for the Beatles as their careers took off.
"I actually did their last tour in England," she said.
"That was really sad because pandemonium kicked in then so you couldn't actually hear their music. It was just absolute all this screaming.
"It was horrendous for them then."
Sam Leach was The Beatles' first manager and knew he was onto a good thing, but back in 1962, a young promoter called Brian Epstein also recognised their potential and slowly took control.
For Leach, hearing the first record was a huge surprise.
"When I first heard it I couldn't believe how good it was, and I gave the copy of the record to my mother-in-law, Dolly," he said.
"I said to her, they're going to be bigger than Elvis, they're going to be bigger than The Shadows and she laughed and she said to my wife, Joan, 'will you listen to your stupid husband?'."
Five decades later, Love Me Do perhaps does not have quite the same resonance with teenagers.
Whatever the assessment, enduring has to be one of them.
The Beatles are down to just two, their last album was recorded 42 years ago, but the music is still everywhere.