How to write a plagal cadence

1. How do you write cadence?
2. What cadence is plagal?

How do you write cadence?

To be considered a perfect authentic cadence (PAC), the cadence must meet three requirements. First, V must be used rather than vii ^o. Second, both chords must be in root position. Finally, the highest note of the I (or i) chord must be the tonic of the scale.

What cadence is plagal?

A plagal cadence is a cadence from IV to I. It is also known as the Amen cadence because of its frequent setting to the text "Amen" in hymns.