i think the harmony parts are mixed up in this song. john is singing the lead (blue) verses but the lower (orange) harmony in the chorus. i sing as john with my g/f but i can't hit high notes intended for paul lol. just wondering if they would fix something like this.
i know changes were made for playability but other songs have switch overs (hard day's night, with a little help…) so i think it is a mixup.