[quote name='PaulWarning' timestamp='1475083390' post='3142941']
I know what you mean in the later years, say from Rubber Soul onwards, but in the early years it wasn't that revolutionary, very good well written pop records, but not a seismic leap that the period around Sgt Peppers was
[/quote]
Nah, IMO it was a leap from the start for all the reasons discussed previously. From up North, writing their own tunes, harmonies, look, groove (listen to Cathy's Clown, then Love Me Do. The latter has [i]swagger.[/i])
It's all well before my time, but I know so many musicians 'of an age' who are doing it 'cos of them.
This chart sums up the sea change pretty well, IMO.