If "Heard it through the Grapevine" is about a guy who suspects his girl's about to leave him, the song we've selected is about a toy-boy who's decided to leave his sugar mommy (or daddy). Considered by many to be his best song, Elton John's "Goodbye Yellow Brick Road," from the 1973 album of the same name, deals with the sense of freedom gained from breaking off a relationship that one has come to feel as too constraining.
And here's the cover the Ray Conniff Singers did of the song.
Finally, we have the version by Keane. Do you think he's in the same league as Sir John (Even with the pretty-pretty photos)?