Harmony · Developing

Build and hear triads

Stack thirds to build major, minor, diminished, and augmented chords.

• Major = major 3rd + minor 3rd (4 + 3 semitones)
• Minor = minor 3rd + major 3rd (3 + 4)
• Diminished = 3 + 3 · augmented = 4 + 4

Example: C major is C–E–G. Lower E to E♭ and it becomes C minor: C–E♭–G.