Another song about Love; not nearly as well known or culturally significant,
would be “The Meaning Of The Verb ‘To Love’” by Todd Rundgren. From around 1976. I love a great deal of Todd’s early music.
He does not have the best singing voice, but does have perfect pitch and an incredible ear for melody.
I try to compartmentalize the music from the man. Rundgren has become extremely Liberal and proudly intolerant in his dotage. Almost as bad as Barry Manilow, who stood up and left at Talk Show couch when the guest following him was someone seen as conservative.
I have a transcription disc of a series of Get-Out-The-Vote radio ads put out by a left-leaning group that sought to get young people to the polls in the 1972 presidential election. Although they don't endorse a candidate, it is clear that the ads are encouraging young people to vote Left.
One of these ads is by Todd Rundgren, who announced his candidacy for president in 1984, when he will be old enough to run.