Editing Harmony (section)

== Types ==
[[File:C triad.svg|thumb|right|Close position C major triad. {{audio|Major triad on C.mid|Play}}]]
[[File:C triad open position.svg|thumb|right|Open position C major triad. {{audio|C triad open position.mid|Play}}]]

[[Carl Dahlhaus]] (1990) distinguishes between ''coordinate'' and ''subordinate harmony''. ''Subordinate harmony'' is the [[hierarchical]] [[tonality]] or tonal harmony well known today. ''Coordinate harmony'' is the older [[Medieval music|Medieval]] and [[Renaissance music|Renaissance]] ''tonalité ancienne'', "The term is meant to signify that sonorities are linked one after the other without giving rise to the impression of a goal-directed development. A first chord forms a 'progression' with a second chord, and a second with a third. But the former chord progression is independent of the later one and vice versa." Coordinate harmony follows direct (adjacent) relationships rather than indirect as in subordinate. [[Interval cycle]]s create symmetrical harmonies, which have been extensively used by the composers [[Alban Berg]], [[George Perle]], [[Arnold Schoenberg]], [[Béla Bartók]], and [[Edgard Varèse]]'s ''[[Density 21.5]]''.

Close harmony and open harmony use close position and open position chords, respectively. See: [[Voicing (music)]] and [[Close and open harmony]].

Other types of harmony are based upon the intervals of the chords used in that harmony. Most chords in western music are based on "tertian" harmony, or chords built with the interval of thirds. In the chord C Major7, C–E is a major third; E–G is a minor third; and G to B is a major third. Other types of harmony consist of [[quartal and quintal harmony]].

A [[unison]] is considered a harmonic interval, just like a fifth or a third, but is unique in that it is two identical notes produced together. The unison, as a component of harmony, is important, especially in orchestration.<ref name="grovelead">{{cite Grove |last=Dahlhaus |first=Carl |title=Harmony}}</ref> In pop music, unison singing is usually called ''doubling'', a technique [[The Beatles]] used in many of their earlier recordings. As a type of harmony, singing in unison or playing the same notes, often using different musical instruments, at the same time is commonly called [[monophony|monophonic]] [[harmonization]].