John Lennon was gunned down this night in 1980 by Mark David Chapman. I remember that night well: a student of mine called me in the middle of it to report the slaying. Lennon was my least favorite Beatle due to his silly utopianism, as expressed in the lyrically inane 'Imagine,' but this tune of his from the 1965 Rubber Soul album is a gem, and more than fit to remember him by.
And I believe he penned Tomorrow Never Knows from the Revolver album, the best song I know of about meditation. It gives me goose bumps still, almost 50 years later.