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Key Relationships

Key Relationships. AP MUSIC THEORY 2014. Mode Mixture. Combining keys from MAJOR and PARALLEL MINOR OR Mixing the PARALELL MAJOR and MINOR MODES use flat3, flat6, flat 7. Mixture Chords in Minor. Borrow or MIX chords from parallel minor when in minor tonality

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Key Relationships

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  1. Key Relationships AP MUSIC THEORY 2014

  2. Mode Mixture • Combining keys from MAJOR and PARALLEL MINOR • OR • Mixing the PARALELL MAJOR and MINOR MODES use flat3, flat6, flat 7

  3. Mixture Chords in Minor • Borrow or MIX chords from parallel minor when in minor tonality • Reflects RAISED 7th SCALE DEGREE of harmonic form • Dominant chord: minor v to major V – Leading Tone chord: VII to viidim • Common practice: Picardy third (altering the 3rd of the chord)

  4. MODULATION • WHEN? • Consistent reoccurance of same accidentals • IF RNA has atypical progressions in current key • THEN… • Shifting tonal centers • Defined: Process of moving from one tonal center to another, with or without changing the key signature

  5. MODULATION • Temporary tonicization • Temporary sense of new tonic • Addition of 1 or 2 non-diatonic chords • DIFFERENCE? • Simply passing through (region OR area) • Modulation: convincing cadence AND significant time in a new key (larger area of work)

  6. MODULATION • Stages • Establish the first key • The modulation device • Establishment of new tonal center • Closely related keys = common chords • Each key has 5 closely related keys (Differ by no more than 1 accidental) • Relative major or minor • The key with one more sharp or flat and its relative • The key with one less sharp or flat and its relative

  7. MODULATION • Within a phrase is the “common chord” or “pivot modulation” • Pivot chord: diatonic to BOTH keys • Common Chord: ii or IV in NEW key • Where the tonality shifts JUST BEFORE accidental or altered chord • Direction modulation • No use of common chord • Chromatic modulation – direct modulation occurs WITHIN a phrase (chromatically altered note in SAME VOICE) • Phrase modulation – direct modulation BETWEEN phrases

  8. EXAMPLES • P. 257-258

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