Michael Pesentus
Questa e mia
The cantus in particular is very easy, very good for beginners to early notation.
No ficta.
Repeats:
(A BB C) + A
i.e. play ABBC as many times as desired, for as many verses as desired, then finish with a final A.
A is the "Chorus", BBC is the "verse". Structure is chorus-verse-chorus-verse-chorus.