page_title: Augmented-fourths tuning
hierarchical_section_title: Augmented-fourths tuning
caption_attribution_description: English: Tritone drawn in the chromatic circle. Also an augmented-fourths or tritone tuning.
context_page_description: Among alternative tunings for guitar, each augmented-fourths tuning is a regular tuning in which the musical intervals between successive open-string notes are each augmented fourths. Because augmented fourths are alternatively called "tritones" or "diminished fifths", augmented-fourths tuning is also called tritone tuning or diminished-fifths tuning.
  The standard guitar-tuning
  E-A-d-g-b'-e'
  interjects exactly one major third amid four perfect fourths for the intervals between its successive open strings. In contrast, the augmented fourths tunings
  C-F♯-c-f♯-c'-f '♯ and
  B-F-b-f-b'-f'
  have only augmented-fourths intervals.
  The set of augmented-fourths tunings has three properties that simplify learning by beginners and improvisation by experts: Regular intervals, string repetition, and lefty-righty symmetry. These properties characterize augmented-fourths tunings among non-trivial tunings.
context_section_description: Among alternative tunings for guitar, each augmented-fourths tuning is a regular tuning in which the musical intervals between successive open-string notes are each augmented fourths. Because augmented fourths are alternatively called "tritones" ("tri-tones") or "diminished fifths", augmented-fourths tuning is also called tritone tuning or diminished-fifths tuning.
  The standard guitar-tuning
  E-A-d-g-b'-e'
  interjects exactly one major third amid four perfect fourths for the intervals between its successive open strings. In contrast, the augmented fourths tunings
  C-F♯-c-f♯-c'-f '♯ and
  B-F-b-f-b'-f'
  have only augmented-fourths intervals.
  The set of augmented-fourths tunings has three properties that simplify learning by beginners and improvisation by experts: Regular intervals, string repetition, and lefty-righty symmetry. These properties characterize augmented-fourths tunings among non-trivial tunings.
caption: For every augmented-fourths tuning, the interval between successive open-strings is six semitones, half the circumference of the chromatic circle.
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