“I just sat down at my piano in Scotland, started playing and came up with that song. It's a sad song because it's all about the unattainable”: The story of the ballad that sparked the breakup of The Beatles

 https://www.musicradar.com/artists/i-just-sat-down-at-my-piano-in-scotland-started-playing-and-came-up-with-that-song-its-a-sad-song-because-its-all-about-the-unattainable-the-story-of-the-ballad-that-sparked-the-breakup-of-the-beatles