Lennon's lament of love to his wife-to-be Yoko Ono is soulful song in 4/4 with a few pickup measures in 5/4 giving the verses a very special pull.
McCartney delivers a bassline truly embodies the ideals of Let It Be;free, driving and sponteneous (and he sure sounds to have a good time).
Peppered with pentatonic 16th fills it's busy, fun and very much improvised (a stark contrast to the composed lines of Sgt Pepper and White Album).
Paul used his well worn Höfner (which hade been previously retired as he got his Rickenbacker in 1964) for much of the Let It Be and all of the rooftop concert. Due to its mucher lighter weight and shorter scale it made busy lines such as this much easier to play.
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