E Ionian — Triads
Three-note stacks of thirds, one per scale degree. The chord-quality pattern below is the Ionian scale's diatonic harmony.
All 7 triads in sequence
Degree 1 · IE
Degree 2 · iiF#m
Degree 3 · iiiG#m
Degree 4 · IVA
Degree 5 · VB
Degree 6 · viC#m
Degree 7 · vii°D# dim