4794 / 18210 · Workshop 31 — “Giant Steps”: Coltrane Changes, Major-Third Key Cycles, Ultra-Fast Tonal Reorientation, and Surviving Harmony That Moves Faster Than You Can Think← prev⊞ allnext →
31.2Divide the octave into three equal parts
Start on B.
Up a major 3rd:
B → D♯/E♭
Another major 3rd:
E♭ → G
Another:
G → B
We are back at B.
So the three major tonal centers are:
B
E♭
G
They divide the octave into three equal major-third segments.