Back to all posts "Exotic" Tetrachords Reharm Today, I combined a Phrygian-Major tetrachord with a Lydian-Major tetrachord to create a modified v.2 of yesterday's tune. Tomorrow, I'd like to try combining/lengthening yesterday and today's snippets to create a more substantial piece. Holly Mead · Exotic Tetrachords_Lyd-Min-Phr-Maj