Funny how they called it the "British Invasion"
Some people suggest that "the Beatles" were a product of the Tavistock institute. There isn't much proof for it but the techniques they used to promote Beatles were pretty sophisticated, for example paying a few girls to act hysterically when they got off the plane, then other young girls thinking it was real mimicked the behavior when they went to their concerts, creating a mania. And yes, they first were clean cut and wrote simple songs and were able to slip under the parents radar, and then, once they had a mass following, came out with all this really weird music.
Alan Watt talks about a "musical footprint" which is a musicians style, for example Bob Dylan was easy to identify, you knew he wasn't going to come out with a blistering guitar solo. But the Beatles seemed to spontaneously master various genres or styles, not to mention coming up with a new brand of music that nobody had ever heard before. Ok, they could have been geniuses, but more likely there were genius running the program, and the beatles were just four useful idiots who could play and sing a bit. When you think of all the free promotion they got via television and radio it's hard to believe they were a natural phenomon.
I do like Ringo. He is a professed Christian now, not Catholic but seems like a decent guy.