I would refer
A Day in the Life more as a recording than a song, considering how heavily produced it is (in a good way of course) and the production is what makes that song/track more than the main tune itself imo.
Even though I most often use the word "song" for a melody with lyrics just like everybody does, in my mind I always distinguish clearly between a song/main tune and the recording or the production of it. In many cases there's not much a difference between them - you can strip down most or all the accompaniments and your perception of the song still remains the same - it still sounds just as good or even better.
In many other cases however, especially when the main tune is not that good/strong on its own, a good or not so good/bad production can take the song to a whole new level or shrink it down to a lower one. Believe me, you would likely find a lot of those in many popular songs, even in classical music/symphonies, if you pay a little bit attention.
A Day in the Life is no doubt a very popular choice amongst fans, largely thanks to the unique sonic experience it brings to the listeners imo (and to "the fifth Beatle"
) and I love it as well. But imo there is simply no "best Beatles song" - song vs recording aside, it's all subjective and most of all, doesn't matter, especially with a legendary and super prolific band like Beatles.
Each song moves or effects each listener in a different way. Catherine Holmes à Court, the daughter of Robert Holmes à Court, who acquired ATV’s holding company then sold the Beatles catalogue to Michael Jackson, was given a choice of having any Beatles song to her name, and she chose the much lower profile
Penny Lane, not
Yesterday, which was then the most popular and biggest royalty profitable one (currently still the fourth of all time). How lovely is that?
Not a fan of superlatives and since I love so many Beatles songs, I simply can't chose the
best one. But I guess I can tell which song
moves me the most -
The Long and Winding Road.
Of course, I mean the stripped-down version on
Anthology 3 or even better, the most intimate, minimal one on
Let It Be.... Naked /
Get Back sessions - my personal favourite.
Cheers to all Beatles fans and non-Beatles fans who love some of their songs.