4. “Good Day Sunshine” was McCartney’s attempt to emulate the Lovin’ Spoonful.
Paul McCartney was the band’s culture maven at the time, absorbing works of the theatre, avant-garde music, classical compositions – and contemporary acts like the Lovin’ Spoonful.
“‘Good Day Sunshine’ was me trying to write something similar to ‘Daydream,'” McCartney said. That particular Spoonful cut, a low-key ballad, didn’t possess the verve and bounce of “Sunshine,” but the influence is a good example of how the Beatles could take a crumb of someone else’s musical idea and build it up into something entirely their own. It had that “traditional, almost trad-jazz feel,” McCartney added. “That was our favorite song of theirs.”