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Minor chords in a major key: 2m, 3m and 6m

By Adrian · 8 October 2026 · 6 min read

My students don't really mix up the minor chords. They hear a minor chord and know something has changed, but they don't dare say what. The right questions get them there.

Every major key has three minor chords: 2m, 3m and 6m. In C, that's Dm, Em and Am. (If the numbers are new to you, start with Nashville numbers explained.)

Something has changed. But what?

A student hears a minor chord and realises something isn't quite right, that something has changed, but they don't have the courage to try to say what. So I follow up with questions:

1. Did you hear a main chord? 1, 4 or 5.
2. If not, what are we left with?
3. Does it sound major?

And so, together, we reach the conclusion that the chord is 2m, 3m or 6m. It remains to find out exactly which one, but at least we've cut down the possible answers. That's what the rest of this guide is for: each of the three has its own feeling.

2m: one step away from home

2m is the next step after 1, so of course it creates movement, especially since it has no note in common with 1. C is C, E, G; Dm is D, F, A. Nothing stays where it was.

In my view, you choose 2m instead of 4 when you want the harmony to sound less standard. 1 to 4 is standard; 1 to 2m is a bit more surprising and unexpected. Listen to both:

3m: the exotic one

Played after 1, 3m sounds like movement too. I tell my students it's the most exotic of the three minor chords, and I assure them that if they hear a 3m, they'll recognise it, because it sounds very distinct.

And it's true: after I give them this hint, students seem to raise their eyebrows and react differently when they hear a 3m. They associate it with the exotic minor chord of the scale, the one that sounds very mystical.

From 3m, the song can go on to 6m, but also to 4:

6m: home, but not the home you knew

6m has a guide of its own: When 5 doesn't go home. In short, it's a rest chord, and it's easiest to hear right after 5, when the ear expects 1 and gets 6m instead.

Be Thou My Vision, two ways

Here's Be Thou My Vision in D. The way I usually play it, it has only one minor chord: Bm, the 6m. Then I made two changes to make the harmony less standard:

• Line 2 starts on Em (2m) instead of A (5). Both chords hold the E the melody sings there, so the tune doesn't change. The colour does.
• Line 3 has F♯m (3m) instead of D/F♯. The two chords share F♯ and A, so it's a small swap with a big effect: listen for the exotic one.

Switch between the two versions and play the whole verse, or one line at a time. The chords in gold are the ones that change.

Neither version is wrong. The usual chords sound standard; with 2m and 3m, the same melody sounds a bit more surprising. Next time you harmonise a melody, try the same thing: where you'd play 4, try 2m, and see what the song does with it.

Which one was it?

Back to the three questions. Each card below plays a few chords in C and hides the name of the last one. It's minor, so you already know it's 2m, 3m or 6m. Which one?