For 10 points, answer the following about acceptable uses of parallel fifths, which are normally a cardinal sin in counterpoint writing:
[10e] Direct fifths named after this brass instrument, which are related to parallel fifths, are deemed acceptable because of the limited range of its “natural” type. Modern examples of this coiled instrument have valves.
ANSWER: horn [accept French horn or natural horn; reject “English horn”]
[10h] “Mozart fifths” are sometimes deemed acceptable due to the difficulty in avoiding parallel fifths when resolving this chord to a dominant. This nationally-named chord adds a flat-3 scale degree to an “Italian” counterpart.
ANSWER: German augmented sixth chord [prompt on partial answers]
[10m] This Medieval musical style based on Gregorian Chant frequently used parallel fifths to embellish the monophonic melody. This style’s key innovators were Léonin and Pérotin of the Notre Dame school.
ANSWER: organum [accept parallel organum]
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