In music, harmony is the process by which the composition of individual sounds, or superpositions of sounds, is analysed by hearing. Usually, this means simultaneously occurring frequencies, pitches (tones, notes), or chords.
The study of harmony involves chords and their construction and chord progressions and the principles of connection that govern them.
https://en.wikipedia.org/wiki/Harmony
is the process by which the
composition of individual
sounds, or superpositions of
sounds, is analysed by
hearing
Usually, this means
simultaneously occurring
frequencies, pitches
(tones, notes), or chords.
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
and
Renaissance
tonalité
ancienne
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
Interval In music
theory, an interval is
the difference in pitch
between two sounds
An interval may be
described as horizontal,
linear, or melodic if it
refers to successively
sounding tones
such as two adjacent pitches in a
melody, and vertical or harmonic if
it pertains to simultaneously
sounding tones, such as in a chord
Chords and
tension
harmony is manipulated
using chords, which are
combinations of pitch
classes
In tertian harmony, so named after the
interval of a third
the members of chords are
found and named by
stacking intervals of the
third, starting with the
"root", then the "third"
above the root, and the
"fifth" above the root
Perception
Harmony is based
on consonance
a concept whose definition has
changed various times during the
history of Western music
In a psychological approach,
consonance is a continuous variable.
Consonance can vary across a wide
range