How to Make a Chord Progression: 4 Decisions

Writing a progression isn’t about waiting for inspiration. It’s four small decisions made in order. This article focuses on the process, not the theory — for why a progression works, see building progressions with diatonic chords; to build from a mood, see writing progressions by feel.

The core move: change one thing, then listen

First, learn the move you’ll repeat constantly.

1. Open the Chord Progression Player
2. Play C - Am - F - G
3. Change only the last G to C and play again
4. Hear “still going” turn into “finished”

That’s the whole craft: change one thing → listen → decide whether to keep it. You don’t guess the finished loop in one shot; you hear small differences and choose.

Decision 1: the key

Pick one key based on what’s easy to sing or play. C or G major are easiest for beginners. Fixing the key first keeps your note pool stable.

Decision 2: the starting chord

• Start on I (C) — a plain, stable opening
• Start on VIm (Am) — wistful from the first beat

The first chord sets the doorway into the song.

Decision 3: where to land

Decide how you want the “ending” to feel.

• End on I (C) — a clear stop (good for closing a section or a song)
• End on V (G) — unresolved, keeps going (good for loops and intros)

Decide the landing first, and the middle chords become the path toward it.

Decision 4: how long each chord lasts

The same C - Am - F - G feels settled at one chord per bar and busy when you switch every two beats. Start at one chord per bar; vary it once it feels natural.

Then grow it by repetition

With the four decisions made, grow the loop using the core move — changing exactly one thing at a time.

• Reorder it (C-Am-F-G → Am-F-C-G)
• Swap a chord for another in the same role (F → Dm)
• Move the whole thing to a new key

Keep what makes you go “oh.” That’s all it takes to make the progression yours.

If you get stuck

• Weak ending → put G (V) right before the landing chord
• Same feel throughout → change the chord lengths or the starting chord
• Sounds off → too many out-of-key notes; stay diatonic first

What to try next

Take C - Am - F - G and run the change-one-thing experiment five times, playing each version and keeping what you like. After five passes it’s already a different progression — your progression.

→ Try one change at a time in the Chord Progression Player