Barron's AP Music Theory - Chapter 5 Flashcards

Which intervals are perfect? Which are major?

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* Perfect fourth, perfect fifth, octave
* Major second, major third, major sixth, major seventh

What is interval inversion?

Transferring the upper note an octave lower and the lower note an octave higher.

What are the inversion rules?

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* Major intervals invert to minor intervals
* Augmented intervals invert to diminished intervals
* Perfect inverts to perfect
* Second inverts to seventh
* Third inverts to sixth
* Fourth inverts to fifth.

What does it mean to make an interval doubly augmented or doubly diminished?

Make an interval a wholestep larger WITHOUT changing the letter names.

What are simple and compound intervals?

Compound > one octave

What makes a major, minor, augmented and diminished triad?

M3 + P5 = major triad

m3 + P5 = minor triad

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m3 + dim5 = diminished triad.

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M3 + A5 = augmented triad.

What are half-diminished and fully-diminished sevenths?

Half diminished: dim triad + minor seventh

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Fully-diminished: dim triad + dim seventh