How to Write a Chord Progression — From I-IV-V to Complex Changes

Learn the building blocks of chord progressions — I-IV-V, I-V-vi-IV, ii-V-I, 12-bar blues, and how to create your own unique progressions that support your melody.

Start with the Classics

There is a reason certain progressions appear in thousands of songs — they work. Learn these patterns first, then modify them: I-V-vi-IV (the 'pop progression'), I-vi-IV-V (the '50s progression'), ii-V-I (the 'jazz turnaround'), and the 12-bar blues.

Roman Numeral Thinking

Think in Roman numerals, not specific chords. A I-V-vi-IV progression in C is C-G-Am-F. In G, it is G-D-Em-C. The Roman numeral pattern is the same — the chords change with the key. This is how session musicians transpose on the fly.

Create Tension and Release

The V chord creates tension; the I chord releases it. The vi chord adds melancholy; the IV chord adds lift. Use these emotional qualities deliberately. A progression that stays on I too long is boring; one that avoids I too long is unsettling.