Editing Perfect fifth (section)

==Bare fifth, open fifth, or empty fifth==
{{Image frame|content=<score sound="1">
{
  \set Staff.midiInstrument = "electric guitar (clean)"
  \omit Score.MetronomeMark \tempo 4=160
  \repeat unfold 16 { <e b e'>8-. } \bar "|."
}
</score>|caption=E5 power chord in eighth notes}}
A bare fifth, open fifth or empty fifth is a chord containing only a perfect fifth with no third. The closing chords of [[Pérotin]]'s ''[[Viderunt omnes#Pérotin|Viderunt omnes]]'' and ''Sederunt Principes'', [[Guillaume de Machaut]]'s ''[[Messe de Nostre Dame]]'', the [[Kyrie]] in [[Wolfgang Amadeus Mozart|Mozart]]'s ''[[Requiem (Mozart)|Requiem]]'', and the first movement of [[Anton Bruckner|Bruckner]]'s ''[[Symphony No. 9 (Bruckner)|Ninth Symphony]]'' are all examples of pieces ending on an open fifth. These chords are common in [[Medieval music]], [[sacred harp]] singing, and throughout [[rock music]]. In [[hard rock]], [[heavy metal music|metal]], and [[punk music]], [[distortion (music)|overdriven or distorted]] [[electric guitar]] can make thirds sound muddy while the bare fifths remain crisp. In addition, fast chord-based passages are made easier to play by combining the four most common guitar hand shapes into one. Rock musicians refer to them as ''[[power chord]]s''. Power chords often include octave doubling (i.e., their bass note is doubled one octave higher, e.g. F3–C4–F4).
[[File:Antara.mid|thumb|100px|''pacha siku'']]
{{stack|[[File:Kantu.mid|thumb|100px|''k'antu'']]}}

An ''empty fifth'' is sometimes used in [[traditional music]], e.g., in Asian music and in some [[Andean music]] genres of pre-Columbian origin, such as ''[[k'antu]]'' and ''[[sikuri]]''. The same melody is being led by [[parallel fifths]] and octaves during all the piece.

Western composers may use the interval to give a passage an exotic flavor.<ref>Scott Miller, "[http://www.newlinetheatre.com/kingandichapter.html Inside ''The King and I'']", ''[[New Line Theatre]]'', accessed December 28, 2012</ref> Empty fifths are also sometimes used to give a [[cadence (music)|cadence]] an ambiguous quality, as the bare fifth does not indicate a major or minor tonality.