This enables one to, at a glance, be able to understand the function of a sonority, to know whether it is a triad or a seventh chord, and what note is in the bass.ģ. For the sake of an economical description of chord positions when analyzing scores, unique shorthand notations for the Arabic numerals have been developed. Note that the Arabic numerals represent the diatonic interval of each of the notes above the bass (in the most compressed possible version of the chord in the given position).Ģ. The position of a sonority is based on the note of that chord that is articulated by the bass, which is notated in Arabic numerals to the right of the Roman.Ī) Root Position, with the root of the chord in the bass,ī) 1st Inversion, with the third of the chord in the bass, orĬ) 2nd Inversion, with the fifth of the chord in the bass.ī) 1st Inversion, with the third of the chord in the bass,Ĭ) 2nd Inversion, with the fifth of the chord in the bass, orĭ) 3rd Inversion, with the seventh in the bass. Chords are analyzed based on the quality and scale degree of a sonority within the context of the prevailing key center, which is notated in Roman numerals. This is reason for the significance in determining what inversion a given chord is articulated.ġ. Especially important in arranging the chords is the motion of the bass, which provides much of the impulse behind the voice leading as applied to all of the parts. Contributing to the choices that a composer must make in terms of voicing are the aesthetic desire for sonorities that possess strong resonance as well as a clear function within the progression.
Tonal music relies on the inventiveness of the composer to create compelling voicings of each chord within a harmonic progression. Within the context of tonal analysis, it indicates the configuration of chords with respect to the bass part. The use of the word inversion in music theory can have a number of different connotations. Justin Rubin Theory Resources Understanding Inversions of Triads and Seventh Chords
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