Umm. I have worked for two official "Beatles" sites one as a moderator and another I administrate after six years of working there. I attend every Beatlefest and have been to Liddypool numerous times. There simply is no ONE greatest Beatle song. Right now I am very much into Savoy Truffle. So much so I have been going round with the username "CreamTangerine" "Here, There, and Everywhere" online.
LOVE the horns on that song! The Beatles music grew and changed so much over time it's only possible for me to pick maybe a best of by Beatle era. lol.
Too much to love here. Of all time? I still adore the early stuff.
It's easier to pick which of there songs I believe are not great...maaaybe two so far. The rest are pure genius for their time and unequaled in rock and roll.