Write IntervalsWilliam Wieland
Seconds mi2 – half step M2 – whole step op (online practice)
Thirds mi3 – root & 3rd of a minor triad M3 – root & 3rd of a Major Triad op
Fourths P4 – See Circle of Perfect 4ths. A4 is a half step larger than P4. op
Fifths P5 – root & 5th of a Major Triad
P5 – See Circle of Perfect 5ths.		 d5 is a half step smaller than P5. op
Sixths mi6 = P5 + mi2 M6 = P5 + M2 M6 is also 1 to 6 in a major scale. op
Sevenths See Sevenths Diagram. M7 is also 1 to 7 in a major scale. op
2nds, 3rds, 4ths, 5ths, 6ths, & 7ths op
2nds, 3rds, 6ths, 7ths

Augmented (A)
Major (M)
minor (mi)
diminished (d)		 Unisons, 4ths, 5ths, Octaves

Augmented (A)
Perfect (P)
diminished (d)