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augmented sixth. Augmented sixth Play ⓘ. In music, an augmented sixth (Play ⓘ) is an interval produced by widening a major sixth by a chromatic semitone. [1][4] For instance, the interval from C to A is a major sixth, nine semitones wide, and both the intervals from C ♭ to A, and from C to A ♯ are augmented sixths, spanning ten semitones.
The augmented sixth interval is typically between the sixth degree of the minor scale, ♭, and the raised fourth degree, ♯.With standard voice leading, the chord is followed directly or indirectly by some form of the dominant chord, in which both ♭ and ♯ have resolved to the fifth scale degree, .
The augmented scale, also known in jazz theory as the symmetrical augmented scale, [3] is so called because it can be thought of as an interlocking combination of two augmented triads an augmented second or minor third apart: C E G ♯ and E ♭ G B. It may also be called the "minor-third half-step scale", owing to the series of intervals ...
The Tristan chord analyzed as a French sixth (in red) with appoggiatura and dominant seventh with passing tone in A minor. [ 6 ] The chord is an augmented sixth chord, specifically a French sixth chord, F–B–D ♯ -A, with the note G ♯ heard as an appoggiatura resolving to A. (Theorists debate the root of French sixth chords.) The harmonic ...
The term sixth chord refers to two different kinds of chord, the first in classical music and the second in modern popular music. [ 1 ][ 2 ] The original meaning of the term is a chord in first inversion, in other words with its third in the bass and its root a sixth above it. This is how the term is still used in classical music today, and in ...
Pythagorean interval. Pythagorean perfect fifth on C ⓘ: C-G (3/2 ÷ 1/1 = 3/2). In musical tuning theory, a Pythagorean interval is a musical interval with a frequency ratio equal to a power of two divided by a power of three, or vice versa. [ 1 ] For instance, the perfect fifth with ratio 3/2 (equivalent to 3 1 / 2 1) and the perfect fourth ...
Play ⓘ. A tritone substitution is the substitution of one dominant seventh chord (possibly altered or extended) with another that is three whole steps (a tritone) from the original chord. In other words, tritone substitution involves replacing V 7 with ♭ II 7[7] (which could also be called ♭ V 7 /V, subV 7, [7] or V 7 / ♭ V [7]). For ...
Mystic chord. In music, the mystic chord or Prometheus chord is a six-note synthetic chord and its associated scale, or pitch collection; which loosely serves as the harmonic and melodic basis for some of the later pieces by Russian composer Alexander Scriabin. Scriabin, however, did not use the chord directly but rather derived material from ...