Seventh Chords Made Easy Sevenths Diagram Theory Things   William Wieland

Dominant 7th chord — Mm

Major 7th Chord — MM
Minor 7th chord — mm

Diminished 7th chord — dd
Half-diminished 7th chord — dm

  
  7
 Δ7
 7
 o7
 ø7
Seventh Chord
Dominant
Major
Minor
Diminished
Half Diminished
Triad
Major
Major
Minor
Dim.
Dim.
7th
minor
Major
minor
Dim.
minor
7th inverts to
whole step
half step
whole step
1½ steps
whole step
Remember
speed quiz
major-major
minor-minor
all minor 3rds
same 7th as Dom.