What Is Harmony?
To understand harmony, let’s begin by talking about an interval. In Music, an interval is the “space” between notes, when two or more notes are played simultaneously.
If we view notes as steps on a staircase, intervals are the distances between those steps.
Depending on the chosen distance between the notes, we will have a consonant or dissonant harmony created when more than a single note is played simultaneously, or in near sequence.
Harmony is when frequency flows in a manner that math can explain.