Harmonic Cadences Cadence Worksheet Theory Things   William Wieland
As tonal goals, harmonic cadences resolve to stable chords, generally root position major or minor triads.

Authentic
V(7)
 
Right ArrowI
V(7)
 
Right Arrowi  (in minor)
vii°6
 
– I  (vii°6
 
– i)
This is the most important cadence.
Resolve 7 to 8 and 4 to 3.

If a musical phrase is a sentence,
an authentic cadence is a period.
 
Perfect Authentic (2 criteria)
– bass goes 5 to 1
– soprano ends on 1
Imperfect Authentic (all others)
– inverted chords
– vii° substituted for V
All cadences in functional
tonality refer to V - I.
(The plagal cadence is
an elaboration of tonic.)
 
 

Half ? – V
I – V, ii – V, IV – V
i – V, ii°6
 
– V, iv – V  (in minor)
Phrygian:  iv6
 
– V
A half cadence is a comma, The Phrygian Half Cadence features a descending half step in the bass.

Deceptive
V(7)
 
Right Arrowvi
V(7)
 
Right ArrowVI  (in minor)
Rarely  V – IV6
 
A deceptive cadence may fool you. Like in an authentic cadence, 7 resolves to 8.

Plagal IV – I
iv – i  (in minor)
Rarely  ii6
 
– I
a.k.a. Amen cadence Often heard after the final authentic cadence.

Authentic Cadence a.k.a. Full Close, Closed Cadence, Final Cadence and Full Cadence

Half Cadence a.k.a. Half Close, Open Cadence, Imperfect Cadence, Semicadence and Incomplete cadence

Deceptive Cadence a.k.a. Avoided Cadence, Broken Cadence, Interrupted Cadence and Irregular Cadence