Harmony is just the scale seen from a different angle.
Instead of walking along the ladder one note at a time, we hop over every other rung — Do–Mi–So.
That simple “skip one, skip one” pattern creates a triad, and if you do it starting on each note of the scale, you suddenly get all seven chords in the key.
This is the hidden shape underneath almost all Western music.
And there’s one more step:
If you keep stacking thirds and add one more note on top (Do-Mi-Sol → Ti on I, or La-Do-Mi → Sol on vi, etc.), you get a 7th chord, which gives the harmony more colour, more personality, more “pull.”
This page gives you the full map:
But we don’t just look at harmony here — we hear it, sing it and play with it.