Here's the set list: first you learn it — 4 quick hands-on cards. Then you prove it — 6 theory and 2 ear-training challenges. Every right answer adds a bar to tonight's song, Open Skies (D Dorian, 🐢 Half-Time).
📝 Riff sheet
Quartal harmony stacks 4ths instead of 3rds. With no 3rd, the chords sound open, ambiguous and modern.
Covers: Chords stacked in perfect 4ths, their open modern sound, sus chords as quartal. Turn your sound up.