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Harmony

Pandiatonicism

Pandiatonicism denotes the free use of all seven notes of a diatonic scale, without chords and notes being related to each other by the rules of functional harmony. It stays with the notes of the scale, but the sequence of chords follows no cadence model.

Note collection
only the seven notes of a diatonic scale
Harmony
without functional ties, no cadence logic
Sound
open, bright, without leading-tone tension
Period
20th century

The notes without the rules

In functional harmony every chord has its job: it prepares, builds tension or releases it. The sequence dominant–tonic is the pattern. Pandiatonicism takes from the key only the note collection and forgoes this logic. Every chord made from notes of the scale may be placed next to every other, without one expecting the other. The result sounds open and bright, because the tension between leading tone and root is missing.

Chords from white keys only: stacked thirds and sus chords

Four chords, using only white keys: C with an added ninth, a chord of second and fourth (F–G–C), A minor with seventh and ninth, and G with a fourth instead of the third (G–C–D). None resolves into the next, each stands on its own.

As a melody: the material of the scale

C D E G A B G E D C

The melody moves freely through six of the seven notes of the C major scale; the F is left out here. And the B does not act as a leading tone pulling to C but as a free note.

In the glossary: Diatonic · Functional theory · Impressionism

Listening

C(add9)F(sus2)Am(9)G(sus4)

Anyone hearing the four chords senses no direction: C(add9) pushes nowhere, F(sus2) and G(sus4) contain no third that would decide between major and minor. These thirdless chords, such as the suspended chord, are among the typical means of pandiatonicism.

Distinctions

  • Functional harmony: its chords depend on one another. Pandiatonicism forgoes that.
  • Modality: modal music too uses the scale freely, but ties everything to a closing note (the finalis). In pandiatonicism a central note can also exist; but it arises not through the sequence of chords but through emphasis and repetition.
  • Atonality: pandiatonic music stays with the notes of one scale. Atonal music uses all twelve notes without a tonal centre.

Pandiatonicism is found in the music of the 20th century, for example in Stravinsky and Copland.

Practice: Sit at the piano and use only the white keys. Play chords of three to four notes freely and let each chord fade without resolving it. Note down which sequence seems especially open to you.

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Chords

Functional harmony for comparison.

Diatonic chords

How the chords of a key are otherwise related to each other.

Scales

The diatonic scale as a note collection.

Related terms

DiatonicScaleFunctional theorySuspended chordNinth chordImpressionismChurch mode

Editor: Maik Krohm · reviewed on 3 October 2026

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