John of Garland used this word for modes that begin and end with the same value. In Franconian notation, a little stroke following some breves is alternatively called a divisio modi or a sign of this property. This is the second English adjective in the name of the scale formed by stacking the Hypaton, Meson, Diezeugmenon (“dee-uh-zewg-MAY-non”) and Hyperbolaion (“hyper-boh-LYE-on”) tetrachords, called the Greater [this adjective] System. In mensural notation, this adjective applies to time signatures that are full circles, signifying a triple division of breves into semibreves. The consonances that [emphasize] lack this property are thirds and sixths. A cadence that ends with scale degree one in the upper voice over a V-I (“five-one”) progression is this type of authentic cadence, or PAC for short. For 10 points, name this quality of fourth, fifths, and octaves that are neither augmented nor diminished. ■END■
ANSWER: perfect [or perfection; or perfecto; or perfectum; accept Greater Perfect System; accept tempus perfectum; prompt on perfect authentic cadence by asking “Which specific property?”]
<Classical Music>
= Average correct buzz position