Glossary, Unison
   
Glossary
Acoustic
Acoustics
Ancohemitonic

Set Theory
Atonal Theory

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Atritonic

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Augmented
Avoid Note
Bebop
Blues
Cardinality

Set Theory
Cardinality Equivalence

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Cent
Chord
Chord Formula
Chord Type
Chromatic Cluster

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Chromatic Scale
Clock Diagram

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Cluster-free

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Cohemitonic

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Common Practice
Compatibility
Complement

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Consonance
Diatonic
Diminished
Double Augmented Hexatonic
Double Diminished (Octatonic)
Eleventh
Enharmonic Equivalent
Evenness

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Fifth
Forte Number

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Fourth
Guitar
Harmonic Major
Harmonic Minor
Harmony
Interval
Interval Class

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Interval Content

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Inversion
Involution

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Jazz
Jazz Theory
Key
Keyboard
Lewin-Quinn FC-components

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Limited Transposition

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M-Relation

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Major
Melody
Minor
Mode
Ninth
Note
OC-Equivalence

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OPC-Equivalence

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OPTC-Equivalence

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OPTIC-Equivalence

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OPTIC/K-Equivalence

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OTC-Equivalence

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Octatonic
Octave
Octave-Equivalence

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Other Scales
Parallel Key
Pentatonic
Permutation Equivalence

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Piano
Pitch
Pitch Class

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Playing Outside
Prime Form

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Quartal

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Reharmonization
Relative Key
Rhythm
Roman Numeral Function
Root
Scale
Second
Semitone
Set Class

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Seventh
Sixth
Slash Chords
Suspended
Symmetry

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Tenth
Tertiary
Third
Thirteenth
Tonality
Tonic
Transposition
Triad
Tritone
Tritonic

Set Theory
Tuning Systems
Twelfth
Twelve-tone Equal Temperament
Unison
Voice Leading
Whole Tone
Whole-Tone Scale
Z-Relation

Set Theory


Unison

Glossary

One or more instruments or voices playing the same note at the same time constitute a unison (assuming they are in tune). This the closest thing in harmony to an interval of a “first,” which is not a real term in harmony; the smallest interval is the minor second. In musical set theory unison intervals and octave intervals are treated as equivalent since they are octave equivalent.