A harmonic progression is an ordered series of chords that moves with purpose toward a goal, typically following the functional path tonic → predominant → dominant → tonic; on AP Music Theory it governs part-writing, melody harmonization, and the cadences that end phrases.
A harmonic progression is a sequence of chords arranged so the music feels like it's going somewhere. The chords aren't random. In the common-practice style the AP exam tests, they follow a functional logic. Tonic chords (I, vi) establish home. Predominant chords (ii, IV) build momentum away from home. Dominant chords (V, vii°) create tension that demands resolution back to tonic. That T → PD → D → T cycle is the engine of basically every progression you'll write or hear on the exam.
Think of a progression like a sentence. Tonic is the subject, predominant is the verb winding up, dominant is the moment of suspense, and the return to tonic is the period. Reversing the order (like going V → IV in a chorale-style context) is called a retrogression, and the AP exam treats it as an error in stylistic part-writing. Progressions also set up cadences, define phrases, and create the pivot points that let music modulate to new keys.
Harmonic progressions sit at the center of the AP Music Theory CED's harmony units. Unit 4 introduces chord function and cadences, Unit 5 adds predominant function and standard progression patterns, and Units 6-7 layer on embellishing tones and secondary dominants that decorate or intensify the basic progression. Almost every harmony skill the course tests assumes you can recognize and produce a functional progression. When you realize figured bass, part-write from Roman numerals, or harmonize a melody, the College Board is grading whether your chord choices follow normative harmonic progression, not just whether each chord is spelled correctly. It's the difference between knowing vocabulary words and writing a real sentence.
Keep studying AP Music Theory Unit 7
Visual cheatsheet
view galleryChord Functions (Unit 4)
Chord function is the 'job' each chord does (tonic, predominant, dominant), and a harmonic progression is what you get when those jobs happen in the right order. Function is the grammar; the progression is the sentence.
Cadence (Unit 4)
A cadence is the last two-or-so chords of a progression, the punctuation mark that ends a phrase. Authentic, half, plagal, and deceptive cadences are all just different ways a progression chooses to land (or refuse to land).
Voice Leading (Units 4-6)
A progression tells you which chords come next; voice leading tells you how each individual voice (SATB) moves between them. On part-writing FRQs you're graded on both at once, so a correct progression with parallel fifths still loses points.
Subdominant / Predominant Function (Unit 5)
The subdominant (IV) and supertonic (ii) chords are the middle leg of the T → PD → D → T journey. Adding predominants is what turns a bare I-V-I into the fuller progressions Unit 5 expects you to write and hear.
Leading Tone Resolution (Unit 4)
The leading tone's pull up to tonic is the micro-level reason V → I feels inevitable. Progressions work at the chord level because tendency tones like the leading tone are resolving at the note level.
Harmonic progressions show up in nearly every section of the AP Music Theory exam, even when the words don't appear in the question. Multiple-choice questions ask you to identify Roman numerals in a score or hear a progression in harmonic dictation (often a four-chord soprano/bass pattern). The part-writing FRQs hand you a figured bass or Roman numeral progression and grade whether you realize it in four voices with correct doubling and voice leading. The melody harmonization FRQ flips it around. You're given a tune and must choose a chord progression that follows functional norms, which means tonic at the start, a predominant before the dominant, and a real cadence at the end. The fastest way to lose points is writing a retrogression like V → IV, so internalize the T → PD → D → T flow until it's automatic.
A harmonic progression is the whole chord journey across a phrase; a cadence is only the arrival point at the end. Every cadence is part of a progression, but a progression like I-vi-ii-V contains lots of motion before the cadence ever happens. On the exam, 'identify the cadence' means look at the final chords, while 'analyze the progression' means label everything with Roman numerals.
A harmonic progression is a goal-directed sequence of chords, and in AP style it follows the functional order tonic → predominant → dominant → tonic.
Reversing that order, like moving from V back to IV, is a retrogression and counts as a stylistic error on part-writing and harmonization FRQs.
Cadences are the endings of progressions, so identifying a cadence type means checking the last chords of the phrase against the progression that led there.
Part-writing FRQs grade your progression and your voice leading together, so correct Roman numerals with parallel fifths still lose points.
Common stock progressions like I-IV-V-I and I-vi-ii-V-I are worth memorizing because they appear constantly in dictation, analysis, and harmonization questions.
Secondary dominants and modulations (Units 7-8) are just intensified versions of the basic progression, temporarily treating a non-tonic chord as a goal.
It's an ordered series of chords that moves purposefully toward a goal, usually following the functional path tonic → predominant → dominant → tonic (for example, I-ii-V-I). It's the framework behind part-writing, harmonization, and cadence questions on the exam.
No, not in standard common-practice style. Moving from dominant back to predominant is a retrogression, and the AP rubrics treat it as a progression error in part-writing and melody harmonization. Dominant chords should resolve to tonic (or deceptively to vi).
The progression is the entire chord sequence across a phrase; the cadence is just the final arrival (like V-I for an authentic cadence). Exam questions about cadences only care about the last chords, while Roman numeral analysis covers the whole progression.
Master the functional cycle T → PD → D → T and its common versions like I-IV-V-I, I-ii6-V-I, and I-vi-IV-V. Then add the deceptive move V-vi and, for Units 7-8, secondary dominants like V/V that briefly tonicize another chord.
Yes. Aural multiple-choice questions include harmonic dictation-style tasks where you identify Roman numerals or bass lines from a played progression, so practice hearing the difference between tonic, predominant, and dominant function, not just reading them on the page.
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