"It was very co-written. We wanted to do a close-harmony thing, we liked harmonies and we were quite good at them. We used to do a close-harmony version of the Teddy Bears' To Know Her Is To Love Her, which was good for the versatility in the band. We weren't all rock 'n' roll, we could change the pace, which was always nice after you'd played for three hours. We wrote it in two-part harmony and then put the third part in for George to sing; we'd never actually tried to write something like that. Nice middle, John sang that great, then we'd go back into the close-harmony thing."
Paul McCartney
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