The phones lit up and Capitol Records rushed the single out.
The Beatles hit like a nuclear bomb. Within a few weeks, all of U.S. Top 40 radio was playing anything Beatles they could get their hands on.
Then quickly came the rest of the British Invasion groups: Herman's Hermits, Dave Clark 5, The Animals, The Zombies, The Hollies and an up-and-coming "bad boy" band called The Rolling Stones. Among many others.
Even the Gilligan's Island TV show got into the act, featuring a Beatles-like band called "The Mosquitoes" in one of their episodes.
What was funny about the early days of The Beatles was how all the older people at the time dismissed them as unserious musicians who apparently couldn't even tune their guitars properly and wouldn't last very long. "Beatles go back to England" was the refrain.
Yet The Beatles were incredibly sophisticated and seasoned musicians who not only turned pop music upside down but knew how to handle the press as well. The press conference they gave when they arrived at JFK (to do the Ed Sullivan shows) was shocking at the time. After it was done, the clueless media had no idea what just hit them.
The Beatles at JFK....1964
7th February 1964 - The Beatles arrive at JFK airport in New York for their first US performances - this was the press conference that took place...
https://www.youtube.com/watch?v=IeVK5xm_Z2I&frags=pl%2Cwn
It was all a marketing build up by Capitol.
Tollie-VeeJay-Swan released She Loves You etc to little demand.