The Types of Triads and Seventh Chords

TriadsSeventh Chords
Diatonic
Major (M)Major Major (MM)
Minor (m)Major Minor (Mm)
Diminished (, d)Minor Minor (mm)
Half Diminished () or
Diminished Minor (m, dm)
Fully Diminished (, d)
Non-Diatonic
Augmented (+, A)Minor Major (mM)
Diminished Major (M, dM)
Augmented Major (+M, AM)
Augmented Minor (+m, Am)

Return to The Theory & Practice of Tonal Harmony
Return to Pedagogical Resources
Return to Robert Kelley's Music Website