Cadences
Hear how musical phrases end: compare authentic, deceptive, and plagal cadences with two interactive progression loops you can play back to back.
A phrase is a musical sentence, and the cadence is its punctuation. Play this loop and feel it land.
The authentic cadence: V to I
A cadence is simply how a phrase ends. The move you just heard — V resolving to I — is the authentic cadence, the strongest arrival in music. V is the point of maximum tension in the key, and its notes lean hard toward home. When it lands on I, the door closes. Full stop.
The deceptive cadence: the stairs move
Now play this one. Same first three chords, but watch the last step.
V resolves to vi instead. You expected home and got its shadow — like climbing stairs in the dark and finding one more step where the floor should be. That surprise is the deceptive cadence. It is not a wrong note; it is a comma instead of a period, a trick composers use to keep a phrase alive a little longer.
The plagal cadence: the soft amen
There is a third classic ending: IV to I, the plagal cadence. It is the gentle "amen" sung at the end of hymns. Without the strong pull of V, the landing feels soft and warm — less a door closing, more a slow exhale.
Quiz
Listen to both endings. Which one feels finished?