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🎹AP Music Theory Unit 4 Vocabulary

184 essential vocabulary terms and definitions for Unit 4 – Chord Function, Cadence, and Phrase

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🎹Unit 4 – Chord Function, Cadence, and Phrase
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🎹Unit 4 – Chord Function, Cadence, and Phrase

4.1 Harmony and Voice Leading I

TermDefinition
18th-century choraleA hymn-like composition from the Baroque period, typically featuring four-part harmony with a soprano melody and supporting bass, alto, and tenor lines.
Arabic numeralsNumbers (1, 2, 3, etc.) used in figured bass notation to denote specific intervals above a given bass note.
bassThe lowest voice part in SATB four-voice texture, typically the lowest musical line.
bass lineThe lowest melodic line in a musical composition that often implies harmonic progressions through its note choices.
cadenceA harmonic progression that marks the end of a phrase and provides punctuation in musical flow.
cadential ⁶₄ chordA second-inversion chord that typically appears before a V-I cadence, functioning as an acceptable harmonic pattern in voice leading.
change in directionA shift in melodic contour from ascending to descending motion or vice versa.
chord inversionA chord voicing in which a chord member other than the root appears in the bass, resulting in first or second inversion.
chord spellingThe correct arrangement of the notes of a chord, including all necessary accidentals, to properly represent the harmonic function indicated by Roman numerals or figured bass.
chord toneAny of the individual notes that make up a harmonic chord.
chromatically altered pitchesPitches that are raised or lowered by a semitone from their diatonic position within a key.
chromatically inflected pitchA note that has been altered from its diatonic pitch by the addition of an accidental.
close positionA chord spacing where all upper parts are placed as close together as chord tones will allow.
common practice eraThe period of Western classical music, roughly from 1650 to 1900, characterized by specific conventions of harmony and voice leading.
common tonesPitches that are shared between adjacent chords and should be retained in the same voice part to ensure smooth voice leading.
conclusive cadencesCadences that provide a sense of finality and closure, including perfect authentic and plagal cadences.
contrary motionMovement of two voices in opposite directions.
counterpointThe practice of composing polyphonic music using historical conventions, and the resulting texture of independent melodic lines.
cross relationThe prohibited occurrence of a preinflected pitch in one voice directly preceding a chromatically inflected version of that same pitch in another voice.
deceptive cadenceA cadence that avoids the expected V-I resolution of an authentic cadence by substituting a non-tonic chord for the tonic.
dictationThe process of listening to performed music and notating the pitches and rhythms heard.
diminished fifthAn interval spanning five letter names that is one semitone smaller than a perfect fifth, typically requiring proper resolution in counterpoint.
dominant triadA chord built on the fifth scale degree, which creates tension and typically resolves to the tonic.
doublingThe practice of having two or more voices or instruments play the same pitch or pitch class in different octaves.
downward motionMelodic movement in which successive pitches descend in pitch.
eighth notesMusical notes with a duration equal to one eighth of a whole note.
half cadenceAn inconclusive cadence that typically ends on the dominant chord (V).
half notesMusical notes with a duration equal to half of a whole note.
harmonic progressionA sequence of chords that move from one harmony to another, creating the harmonic structure of a musical passage.
imperfect authentic cadenceAn inconclusive cadence created by a V-I progression where chords may be inverted and any chord tone may appear in the soprano.
inconclusive cadencesCadences that do not provide a sense of finality, including half, imperfect authentic, and deceptive cadences.
leading toneThe seventh scale degree in a major scale, located one half step below the tonic with a strong tendency to resolve upward to the tonic.
major keyA key or tonal center based on a major scale, characterized by a specific pattern of whole and half steps.
melodic interestThe quality of a melody that engages the listener through varied and compelling musical ideas.
melodic leapsMovement between non-adjacent pitches in a melody, typically larger than a second.
minor keyA key or tonal center based on a minor scale, characterized by a different pattern of whole and half steps than major keys.
neighboring ⁶₄ chordA second-inversion chord that functions as a passing or embellishing chord, typically supported by a pedal tone in the bass.
note valuesThe relative duration of musical notes, such as whole notes, half notes, quarter notes, and eighth notes.
note-against-note dissonancesDissonant intervals that occur between outer voices simultaneously and must imply an acceptable harmonic progression.
oblique motionMovement where one voice remains stationary while the second voice moves up or down.
octave leapA melodic jump spanning eight letter names, requiring a change in direction in the bass line.
open positionA chord spacing where the upper parts are spaced more widely apart than in close position.
outer voicesThe soprano and bass lines in a harmonic progression, which provide structural and harmonic information.
parallel fifthsThe prohibited motion of two voices moving in the same direction to consecutive perfect fifth intervals.
parallel motionMovement of two voices in the same direction by the same melodic interval.
parallel octavesThe prohibited motion of two voices moving in the same direction to consecutive perfect octave intervals.
passing ⁶₄ chordA second-inversion chord that connects two root-position or first-inversion chords in stepwise bass motion.
perfect authentic cadenceA conclusive cadence created by a V-I progression with both harmonies in root position, ending with scale degree 1 in the soprano.
perfect fifthAn interval spanning five letter names with a frequency ratio of 3:2, considered a perfect consonance in tonal music.
perfect fourthAn interval spanning four letter names with a frequency ratio of 4:3, considered a perfect consonance in tonal music.
phrasesComplete musical utterances that form syntactical units in music and typically conclude with a cadence.
Phrygian half cadenceA cadence that moves from a subdominant chord in first inversion (iv⁶) to a dominant chord (V), used in minor keys only.
plagal cadenceA cadence that moves from a subdominant chord (IV or iv) to a tonic chord (I or i), also known as an 'Amen cadence.'
quarter notesMusical notes with a duration equal to one quarter of a whole note.
repeated bass notesThe same pitch sounded consecutively in the bass line, subject to specific restrictions regarding beat placement.
rhythmic profileThe characteristic pattern of note values and rhythmic patterns that define the style of a musical line.
Roman numeral analysisA system of notation using Roman numerals to identify chords and their harmonic function within a key.
root positionA chord voicing in which the chordal root appears in the bass (lowest part) of the chord.
SATB orderThe arrangement of voices from highest to lowest as soprano, alto, tenor, and bass to maintain proper voice crossing conventions.
scale degree 1The tonic note, the first degree of a musical scale.
similar motionMovement of two voices in the same direction but not by the same melodic interval.
soprano lineThe highest melodic line in a musical composition, typically sung by the highest voices or played by the highest instruments.
spacingThe vertical distance between adjacent voices in a chord, which affects the clarity and balance of the harmonic sound.
stepA melodic interval that traverses adjacent pitches with neighboring letter names.
stepwise motionMovement in a melodic line by adjacent scale degrees, either ascending or descending.
strong beatA beat in a measure that receives primary emphasis, typically the first beat or other metrically accented beats.
subdominant triadA chord built on the fourth scale degree, typically used to move toward the dominant or return to the tonic.
supertonic triadA chord built on the second scale degree of a major or minor scale.
suspensionA nonharmonic tone created when a note from a previous chord is held or rearticulated over a new chord before resolving downward by step to a chord tone.
tendency tonesScale degrees that have a strong inclination to resolve to a specific neighboring pitch, such as the leading tone resolving upward to the tonic.
tonic triadA chord built on the first scale degree, serving as the primary harmonic center and point of rest in a key.
triadA chord whose essence consists of three distinct pitches stacked on adjacent lines or spaces in thirds.
upward motionMelodic movement in which successive pitches ascend in pitch.
voice crossingThe inappropriate overlap of pitch ranges between adjacent voices, which should be avoided for clarity of voice leading.
voice leadingThe technique of moving individual melodic lines (voices) in a musical composition, including considerations for smooth transitions and proper resolution of chords.
weak beatA beat in a measure that receives less emphasis than the downbeat or other strong beats.

4.2 SATB Voice Leading

TermDefinition
18th-century voice leadingThe normative conventions and procedures for connecting chords and moving voices established during the Common Practice Period of the 18th century.
⁶₄ chordA second-inversion triad where the fifth of the chord appears in the bass, notated with the figured bass symbols 6 and 4.
accidentalA symbol that modifies the pitch of a note, such as a sharp, flat, or natural.
altoThe second-highest voice part in SATB four-voice texture, positioned between soprano and tenor.
bassThe lowest voice part in SATB four-voice texture, typically the lowest musical line.
chorale harmonizationThe process of arranging a melody with harmonic accompaniment in SATB four-voice texture, commonly used in music theory exercises.
chord spellingThe correct arrangement of the notes of a chord, including all necessary accidentals, to properly represent the harmonic function indicated by Roman numerals or figured bass.
chord tonesThe individual pitches that make up a harmonic chord.
chord voicingThe arrangement and distribution of the notes of a chord across different voices and pitch ranges.
contrary motionMovement of two voices in opposite directions.
diminished fifthAn interval spanning five letter names that is one semitone smaller than a perfect fifth, typically requiring proper resolution in counterpoint.
direct fifthsA voice-leading error where two voices approach a perfect fifth by similar motion, also called hidden fifths.
direct octavesA voice-leading error where two voices approach a perfect octave by similar motion, also called hidden octaves.
doublingThe practice of having two or more voices or instruments play the same pitch or pitch class in different octaves.
fifthThe interval of a fifth above the root of a chord, or the note that is a fifth above the root.
figured bassA notational system using Arabic numerals below a bass note to indicate the intervals and pitches of the chord to be played above that bass note.
first inversionA chord voicing in which the chordal third appears in the bass.
four-voice textureA musical arrangement consisting of four distinct voice parts or lines, typically organized as SATB.
harmonic intervalsThe vertical distance between two notes sounding simultaneously in different voices.
harmonic progressionA sequence of chords that move from one harmony to another, creating the harmonic structure of a musical passage.
inverted triadA triad in which a note other than the root appears in the bass, either first inversion (⁶) or second inversion (⁶₄).
leading-toneThe seventh scale degree, which has a strong tendency to resolve upward to the tonic.
musical linesIndividual melodic strands or voices that can be identified and tracked within a musical composition.
oblique motionMovement where one voice remains stationary while the second voice moves up or down.
outer voicesThe soprano and bass lines in a harmonic progression, which provide structural and harmonic information.
overlapping voicesA voice-leading error where one voice crosses above or below the pitch of an adjacent voice.
parallel motionMovement of two voices in the same direction by the same melodic interval.
perfect fifthAn interval spanning five letter names with a frequency ratio of 3:2, considered a perfect consonance in tonal music.
perfect intervalA harmonic interval (unison, fourth, fifth, or octave) that is considered consonant and stable.
pitch positionThe relative height or register of a musical line in relation to other lines in a composition.
Roman numeral progressionA harmonic progression notated using Roman numerals to indicate chord function and quality.
rootThe fundamental note of a chord upon which the chord is built.
root-position seventh chordA seventh chord with the root in the lowest voice.
seventh chordsChords built on a triad by adding a note a seventh above the root, creating four-note harmonies with specific qualities.
similar motionMovement of two voices in the same direction but not by the same melodic interval.
sixthsAn interval spanning six letter names, such as C to A.
soprano lineThe highest melodic line in a musical composition, typically sung by the highest voices or played by the highest instruments.
spacingThe vertical distance between adjacent voices in a chord, which affects the clarity and balance of the harmonic sound.
tendency toneA note that has a strong inclination to resolve to a specific neighboring pitch, typically the leading tone resolving to the tonic or the fourth scale degree resolving downward.
tenorThe second-lowest voice part in SATB four-voice texture, positioned between alto and bass.
thirdThe interval of a third above the root of a chord, or the note that is a third above the root.
thirdsAn interval spanning three letter names, such as C to E.
tonic triadA chord built on the first scale degree, serving as the primary harmonic center and point of rest in a key.
triadA chord whose essence consists of three distinct pitches stacked on adjacent lines or spaces in thirds.
triadsThree-note chords consisting of a root, third, and fifth.
unequal fifthsA voice-leading error where fifths of different quality (perfect and diminished, or perfect and augmented) occur in succession.
V⁷The dominant seventh chord, built on the fifth scale degree with an added minor seventh above the root.
voice independenceThe clarity and distinctness of individual voices maintained through proper voice leading and spacing.
voice leadingThe technique of moving individual melodic lines (voices) in a musical composition, including considerations for smooth transitions and proper resolution of chords.

4.3 Harmonic Progression, Functional Harmony, and Cadences

TermDefinition
cadenceA harmonic progression that marks the end of a phrase and provides punctuation in musical flow.
chord inversionA chord voicing in which a chord member other than the root appears in the bass, resulting in first or second inversion.
common practiceThe system of tonal musical organization that prevailed in Western music from approximately 1650 to 1900.
conclusive cadenceA cadence that provides a strong sense of harmonic repose and finality, typically ending on the tonic.
deceptive cadenceA cadence that avoids the expected V-I resolution of an authentic cadence by substituting a non-tonic chord for the tonic.
dominantThe fifth scale degree and its associated chord (V), which creates tension and typically resolves to the tonic.
half cadenceAn inconclusive cadence that typically ends on the dominant chord (V).
harmonic functionThe role a chord plays in a harmonic progression, such as tonic, predominant, or dominant function.
harmonic progressionA sequence of chords that move from one harmony to another, creating the harmonic structure of a musical passage.
harmonic rhythmThe rate at which chords change in a given musical passage or composition.
imperfect authentic cadenceAn inconclusive cadence created by a V-I progression where chords may be inverted and any chord tone may appear in the soprano.
inconclusive cadenceA cadence that does not provide a sense of finality or completion, typically ending on a non-tonic harmony.
inversionsDifferent voicings of a chord where the root is not in the lowest voice, indicated by Arabic numerals in harmonic analysis.
musical formThe overall structural organization and design of a musical composition.
perfect authentic cadenceA conclusive cadence created by a V-I progression with both harmonies in root position, ending with scale degree 1 in the soprano.
phrase structureThe organization and division of musical material into distinct sections or phrases.
Picardy thirdA major tonic chord that ends a section in a minor key, creating a distinctive harmonic effect.
plagal cadenceA cadence that moves from a subdominant chord (IV or iv) to a tonic chord (I or i), also known as an 'Amen cadence.'
predominantA harmonic function that typically occurs between the tonic and dominant, preparing for the resolution to the dominant.
retrogressionA chord progression that deviates from common-practice norms, such as V to IV, which is generally avoided in traditional tonal composition.
Roman numeral analysisA system of notation using Roman numerals to identify chords and their harmonic function within a key.
root positionA chord voicing in which the chordal root appears in the bass (lowest part) of the chord.
scale degreeThe position of a pitch within a scale, identified by name or number relative to the tonic.
soprano lineThe highest melodic line in a musical composition, typically sung by the highest voices or played by the highest instruments.
tonalMusic organized around a central pitch (tonic) where all other pitches relate hierarchically in a pre-established system.
tonicThe first scale degree and the primary harmonic center of a key, providing the sense of resolution and stability.

4.4 Voice Leading with Seventh Chords

TermDefinition
ascending leapMovement upward by an interval larger than a step.
common toneA note that appears in both consecutive chords and can be retained in the same voice to create smooth voice leading.
contextual listeningThe practice of listening to and analyzing music within its historical and stylistic context.
descending leapMovement downward by an interval larger than a step.
descending stepMovement downward to an adjacent lower scale degree.
dominant seventh chordA seventh chord built on the fifth scale degree of a key, typically used to create harmonic tension that resolves to the tonic.
doubledWhen a note appears in more than one voice in a chord.
error detectionThe identification of voice-leading mistakes or violations of compositional conventions in musical writing.
fifth of a chordThe interval of a fifth above the root of a chord.
four-voice textureA musical arrangement consisting of four distinct voice parts or lines, typically organized as SATB.
I-V⁴₃-I⁶ progressionA specific chord progression from tonic to dominant seventh in second inversion to tonic in first inversion.
inverted seventh chordA seventh chord with a note other than the root in the lowest voice.
leapA melodic interval larger than a step, traversing pitches that are not adjacent letter names.
part-writingThe process of composing individual melodic lines for each voice in a multi-voice musical texture.
rootThe fundamental note of a chord upon which the chord is built.
root-position seventh chordA seventh chord with the root in the lowest voice.
score analysisThe examination and study of musical scores to understand compositional techniques and voice-leading procedures.
seventh chordsChords built on a triad by adding a note a seventh above the root, creating four-note harmonies with specific qualities.
stepA melodic interval that traverses adjacent pitches with neighboring letter names.
V⁴₃ chordA dominant seventh chord in second inversion, with the seventh in the bass and specific voice-leading conventions.
voice leadingThe technique of moving individual melodic lines (voices) in a musical composition, including considerations for smooth transitions and proper resolution of chords.

4.5 Voice Leading with Seventh Chords in Inversions

TermDefinition
bassThe lowest voice part in SATB four-voice texture, typically the lowest musical line.
chord inversionA chord voicing in which a chord member other than the root appears in the bass, resulting in first or second inversion.
diminished seventh chordA four-note chord built on a root with a minor third, diminished fifth, and diminished seventh.
dominant functionThe harmonic role of chords built on the fifth scale degree that create tension and pull toward resolution to the tonic.
doublingThe practice of having two or more voices or instruments play the same pitch or pitch class in different octaves.
harmonic progressionA sequence of chords that move from one harmony to another, creating the harmonic structure of a musical passage.
leading-tone seventh chordA seventh chord built on the seventh scale degree (vii°⁷ or vii⁰⁷), functioning either as a dominant substitute or as a tonic prolongation.
seventh chordsChords built on a triad by adding a note a seventh above the root, creating four-note harmonies with specific qualities.
stepwise motionMovement in a melodic line by adjacent scale degrees, either ascending or descending.
tendency toneA note that has a strong inclination to resolve to a specific neighboring pitch, typically the leading tone resolving to the tonic or the fourth scale degree resolving downward.
tonicThe first scale degree and the primary harmonic center of a key, providing the sense of resolution and stability.
voice leadingThe technique of moving individual melodic lines (voices) in a musical composition, including considerations for smooth transitions and proper resolution of chords.