My theory is that song lyrics generally have 4 levels of rhetoric. Level 1 is literal and easy to get. Levels 2-4 are metaphorical and more difficult to understand. To understand a song on level 2,3, or 4 your brain at subconscious levels must make the connections among variables making up the metaphorical system. Song lyrics are like derivatives and limits in high school calculus. You either get them or you don't.
"Sugar Mountain" by Neil Young. My deconstruction.
Level 1. Obvious.
Level 2. Sugar = cocaine.
Level 3. Sugar mountain is a mountain in Canada covered with 10 feet of fresh champagne powder year round. It has 3 perfect ski lines 4,000 feet long and is served by a 4-person heated gondola with comfortable padded seats.
Level 4. Sugar = gold dust. We are miners living on a mining colony doing the dirty work for smarter races that live on other planets.