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The circle progression is commonly a succession through all seven diatonic chords of a diatonic scale by fifths, including one progression by diminished fifth, (in C: between F and B) and one diminished chord (in C major, B o), returning to the tonic at the end. A full circle of fifths progression in C major is shown below.
The diatonic circle of fifths is the circle of fifths encompassing only members of the diatonic scale. Therefore, it contains a diminished fifth, in C major between B and F. See structure implies multiplicity. The circle progression is commonly a circle of fifths through the diatonic chords, including one diminished chord.
The I–V–vi–IV progression is a common chord progression popular across several music genres. It uses the I, V, vi, and IV chords of the diatonic scale. For example, in the key of C major, this progression would be C–G–Am–F. [1] Rotations include: I–V–vi–IV: C–G–Am–F; V–vi–IV–I: G–Am–F–C
These chords are all borrowed from the key of E minor. Similarly, in minor keys, chords from the parallel major may also be "borrowed". For example, in E minor, the diatonic chord built on the fourth scale degree is IVm, or A minor. However, in practice, many songs in E minor will use IV (A major), which is borrowed from the key of E major.
Pan-diatonicism sanctions the simultaneous use of any or all seven tones of the diatonic scale, with the bass determining the harmony. The chord-building remains tertian, with the seventh, ninth, or thirteenth chords being treated as consonances functionally equivalent to the fundamental triad.
Short cyclical progressions may be derived by selecting a sequence of chords from the series completing a circle from the tonic through all seven diatonic chords: [15] I–IV–vii o –iii–vi–ii–V–I. This type of progression was much used by classical composers, who introduced increasingly subtle inflections.
Passing chord in B ♭ from across the circle of fifths (tritone, see also tritone substitution): B ♮ 7 Play ⓘ. [1] The circle of fifths drawn within the chromatic circle as a star dodecagon. [2] In music, a passing chord is a chord that connects, or passes between, the notes of two diatonic chords. [3] "
The term chord function may refer to: Diatonic function – in music, the role of a chord in relation to a diatonic key; In mathematics, the length of a chord of a circle as a trigonometric function of the length of the corresponding arc; see in particular Ptolemy's table of chords .