tetrachord
Sign in to savethumb|Tetrachord based on D, 1½1 thumb|2 consecutive tetrachords, heptachord based on D, 1½11½1 In music theory, a tetrachord (; ) is a series of four notes separated by three intervals. In traditional music theory, a tetrachord always spanned the interval of a perfect fourth, a 4:3 frequency proportion (approx. 498 cents)—but in modern use it means any four-note segment of a scale or tone row, not necessarily related to a particular tuning system. Three modal patterns are possible: \new Staff \with { \consists Horizontal_bracket_engraver \remove "Time_signature_engraver" \remove "Bar_engrave
Article
16 sectionsContents
- History
- Ancient Greek music theory
- Pythagorean tunings
- Variations
- Romantic era
- 20th-century analysis
- Atonal usage
- Non-Western scales
- India-specific tetrachord system
- Persian
- Compositional forms
- See also
- References
- Sources
- Further reading
- External links
thumb|Tetrachord based on D, 1½1 thumb|2 consecutive tetrachords, heptachord based on D, 1½11½1 In music theory, a tetrachord (; ) is a series of four notes separated by three intervals. In traditional music theory, a tetrachord always spanned the interval of a perfect fourth, a 4:3 frequency proportion (approx. 498 cents)—but in modern use it means any four-note segment of a scale or tone row, not necessarily related to a particular tuning system. Three modal patterns are possible:
\new Staff \with { \consists Horizontal_bracket_engraver \remove "Time_signature_engraver" \remove "Bar_engraver" } \relative c' { d1 e -\tweak HorizontalBracketText.text "semitone" \startGroup f\stopGroup g}