Chord Progression
A sequence of chords that supports a melody. A handful of progressions (I-V-vi-IV, I-IV-V, ii-V-I) anchor most popular music.
01 · Define
Say it without the jargon.
One-sentence definition
A sequence of chords that supports a melody. A handful of progressions (I-V-vi-IV, I-IV-V, ii-V-I) anchor most popular music.
02 · Understand
How it works in music
Plain definition
A chord progression is the harmonic skeleton of a song, the order in which chords change as time moves forward. In Western popular music, a small handful of progressions cover most of the canon. The I-V-vi-IV progression (C-G-Am-F in C major) is the famous "four-chord song" that fits "Let It Be", "No Woman No Cry", "Don't Stop Believin'", and hundreds of others. The 12-bar blues is a I-IV-V variant that anchors blues, rock and roll, and most early jazz.
How it works
Chords are built from scales, and they have functions. The I chord (tonic) is home. The V chord (dominant) creates tension that wants to resolve back to I. The IV chord (subdominant) provides contrast without strong tension. The vi chord (relative minor) introduces emotional shading. Once you can hear these functions, you can predict what chord is likely to come next, and intentionally subvert that expectation when you want surprise.
Use it in practice
Modal interchange (borrowing a chord from a parallel scale), secondary dominants (a temporary V chord of a non-tonic), and key changes all extend the toolkit. But the foundation is the same: chords have function, function creates expectation, and great songwriters use both expectation and surprise to make harmonic motion feel inevitable in retrospect.
03 · Use it
Hear it. Try it. Keep it.
Turn the definition into one observation, one controlled move, and one memory line you can carry into the next session.
Hear · Notice
Hear home, departure, tension, and return before worrying about Roman numerals or chord names.
Try · One move
Loop four chords, sing their roots, then replace one chord and describe how the sense of arrival changes.
Keep · Memory line
Function creates expectation; sequence turns expectation into motion.
One example can demonstrate understanding; it cannot certify hearing, technique, authorship, equipment safety, voice health, or professional readiness.
04 · Continue
Practise “Chord Progression” in Main Act.
Open the related school to practise this idea, or add it to a Main Act plan.