Cartoon Trivia with Leo & Peri

Léonin (b. 1150?) was the first known composer; Pérotin (b. 1200?) was the second known composer.

Having known so much, we present Classicalite's Cartoon Trivia with Leo & Peri.

Leo: "Yo, Peri. I'm trying to get in touch with an old student of ours--last name 'Four.' For the life of me, though, I can't seem to remember his first name. I want to say 'Andy,' but that doesn't sound right. I know he was an Englishman. Any ideas...?"

Do you know the answer, Classicalites? If so, let us know in the comments. As always, we'll post the right response soon.