Everyone who watches it already knows, note for note, the finished song being crafted. Only they don't. We get to watch the song's creators stumbling towards the light. We feel satisfaction as they approach the "true" sound.
As in a pantomime ("it's behind you!"), John says "attracts me like a cauliflower", and we all silently shout "like no other lover"
I'll never be a Beatle, but it does feel validating that I can at least attempt to write music in exactly the same way they did, even if the results won't be quite as good.
To me, choosing what not to do when you have ideas pouring out all the time is vital.
I think it can help for avoiding creator's block (more commonly known as "writer's block," but I'm being more general here).
It's easy to avoid getting started because you don't think you have a good enough idea yet. But when the thinking gets long, try just diving in and making something. Now you have something to react to, and you can often quickly identify things you don't like about it.
Then you think of ways to avoid these things you don't like, and dive back in to make the next something. Gradually you fill in the negative space, and after enough iterations are left with something good.
When an opportunity in life comes into view, I always focus on what could be a negative result. My friends say that's pessimism, I say it's trying to avoid some types of potential reality. It has served me well for the most part.
Maybe it's because I've loved the Beatles for a long time but I found every second of that film to be completely gripping. I could have watched another 8 hours.
The banality is what made it so fascinating to me. How classic songs, that have been drilled into my mind and into the fabric of culture for decades were just bits and pieces floating in the minds of a small collection of people, decisions and circumstances. They just bounce around and snowball until something comes out.
The end result sounds so utterly perfect that it's jarring and exhilarating to see some bored lads shooting the shit and suddenly a masterpiece just falls out of nowhere. Then they just go home and eat dinner. What the fuck.
Sure some of them are likely on drugs or showed up too late from a hangover. But it’s just so.. banal