Harmony is the magic in music. It can turn a melody into a lament or a hymn of joy. It is based on the physics of vibration. In this class we will look at how nature provides the dichotomy of consonance and dissonance, how chords that are the building blocks of tonal harmony were derived, and how they have functioned to provide the vivid colors that enchant us all in the music we love. And we will listen to a lot of great music. No knowledge of theory or science is required!