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Journal Highland Cathedral – Mass band, Breman 2008 https://youtu.be/oieFS785QPk https://youtu.be/oieFS785QPk
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Root, 1 st, and 2 nd Inversions
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Review What is a triad? How do we construct triads? How can we identify the quality of a triad (major or minor)?
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Scale Degrees I – Tonic ii – Supertonic iii – Mediant IV – Subdominant V – Dominant vi – Submediant vii – Leading tone
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Inversions An inversion describes the bass note in relation to the other notes in the triad. A chords (triads) inversion is determined by which note is the bottom note in a chord (triad). In an inverted chord, the root is not in the bass (is not the lowest note). A triad may appear in one of 3 positions: root, 1 st inversion, or 2 nd inversion.
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Root Position A triad is in root position if the root of the triad is in the bass. For example, in C major, C is the root. C is in the bass, followed by the 3 rd (E), and 5 th (G).
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Root position examples Construct the following triads in root position: Eb + : Eb, G, Bb B - : B, D, F# F# + : F#, C#, G#
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1 st Inversion To create a triad in 1 st inversion, simply move the bass note up an octave. The bass note is now the 3 rd of the chord. For example, in C major, the 3 rd of the chord (E) would now be the bass note, followed by the 5 th (G), and the root (C).
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Building 1 st inversion triads For example, to build a G major tonic triad in 1 st inversion… 1. Discover the root of the triad. (G) 2. Discover the 3 rd of the triad. (B) 3. Discover the 5 th of the triad. (D) 4. Draw the triad in root position. (G, B, D) 5. Move the root/bass note (G) up an octave. The 3 rd should now be the bass note. (B, D, G)
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1 st Inversion Examples In the key of Bb +, construct the mediant triad in 1 st inversion. F (bass/3 rd ), A (5 th ), D (root up an octave) In the key of G -, construct the subdominant triad in 1 st inversion. Eb (bass/3 rd ), G (5 th ), C (root up an octave)
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2 nd Inversion To create a 2 nd inversion triad, move the root up an octave. Then, move the 3 rd up an octave. The 5 th is now the bass note. For example, in C major, the 5 th (G) would now be the bass note, followed by the root (C), then the 3 rd (E).
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Building 2 nd inversion triads For example, to build an A major tonic triad in 2 nd position… 1. Discover the root of the triad. (A) 2. Discover the 3 rd of the triad (C#) 3. Discover the 5 th of the triad (E) 4. Draw the triad in root position (A, C#, E) 5. Move the root up an octave. (C#, E, A) 6. Move the current bass note (the 3 rd of the triad) up an octave. 7. The 5 th should now be the bass note (E, A, C#)
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2 nd inversion examples In the key of Db +, construct the dominant triad in 2 nd inversion. Eb (5 th ), Ab, (root), C (3 rd ) In the key of F# -, construct the leading tone triad in 2 nd inversion. B (5 th ), E (root), G# (3 rd )
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