Elton John's 'Goodbye Yellow Brick Road' carries a meaning that goes well beyond its melody. The title borrows from The Wizard of Oz, where the famous road leads Dorothy to a glittering city she ultimately leaves behind. Lyricist Bernie Taupin turned that image into a statement about walking away from fame and its trappings in search of a plainer life. A new explainer traces the song's history, its lyrics and Taupin's role in shaping them.