Write an essay discusing the pendulum swings.

The trends of each era (which side of the pendulum it was on);
Important historical events, movements, inventions (if any), etc.
A total of six (4) composers/pieces and how they epitomized the era (For example, “Blowin’ in the Wind” by Bob Dylan represents the turbulent 1960s with lyrics emphasizing peace… and no, you can’t use that example now.)