What is the correct name for this scale?

__________ composed the Messe de Nostre Dame, a polyphonic work setting all the chants of the Ordinary of the

Mass.

a. Hildegard of Bingen b. Machaut c. Perotinus d. Beatriz, Countess of Dia e. The composer isanonymous

Pianists began abandon stride-influenced playing partly because the ____ allowed for time keeping to

be done on that instrument instead of the left hand of the piano.

a. bass drum technique b. hi-hat technique c. walking bass d. rhythm guitar technique