page_title: Repetitive tuning
section_title: Four
hierarchical_section_title: Repetitive tuning / Four
caption_attribution_description: English: Diminished seventh chord drawn in the chromatic circle. Also a minor-thirds tuning.
context_page_description: Repetitive tunings are alternative tunings for the guitar. A repetitive tuning begins with a list of notes that is duplicated, either at unison or at higher octaves.
  Among regular tunings, there are four repetitive-tunings; this article discusses three minor-thirds tuning, major-thirds tuning, and augmented-fourths tuning. Among open tunings, there are repetitive versions of open C tuning and open G tuning, which have been associated with the English and Russian guitars, respectively.
  Repetition eases the learning of fretboard and chords and eases improvisation. For example, in major-thirds tuning, chords are raised an octave by shifting fingers by three strings on the same frets.
  Repetitive tunings are listed after their number of open pitches. For example, the repetitive open-C tuning C-E-G-C-E-G has three open-pitches, each of which is associated with repeated notes {, }.
context_section_description: In each minor-thirds tuning, every interval between successive strings is a minor third. It repeats its open-notes after four strings. Doubled notes have different sounds because of  differing "string widths, tensions and
  tunings, and [they] reinforce each other,
  like the doubled strings of a twelve string guitar
  add chorusing and depth," according to William Sethares.
  In the minor-thirds tuning beginning with C,
  C-D♯-F♯-a-c-d♯
  the open strings contain the notes (c, d♯, f♯) of the diminished C chord. The minor-thirds tuning is also a regular tuning, which has a minor third interval between consecutive strings.
caption: Minor-thirds tunings repeat its four notes after four strings (twice on an eight-string guitar).
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