I would like to know your thoughts...
i'd say because yesterday is a softer song
if u notice in she loves you his bass notes double up with ringo's foot on the bass drum.
the way he's playing with his thumb gives a more percussive attack
it also probably gives him a little more volume to try and compete with all the other noise
in the yestersay clip - he's actually playing with his index finger and
his middle finger a millisecond behind it- to almost make an elongated running of the two rounded fingertips over the string- like a cellists bow. its a softer longer attack
looks so to me anyway
very observant xose - i'd never have noticed that and it really speaks to the breadth of mccartney's palette on the low end