Tuning Guides

Open Am Tuning Guide

Open Am is a useful alternate tuning if you want the open-string ring of an A-based tuning without the built-in major brightness of Open A. The open strings already give you an A minor chord, so the guitar sounds darker immediately. That makes Open Am a strong fit for moody slide parts, droning accompaniment, fingerstyle textures, and songwriting that wants open resonance without sounding cheerful by default. The catch is practical, not musical: getting there from standard tuning means raising three strings, so this is a tuning you should approach carefully instead of casually.

Want to try Open Am right now?

Use the dedicated tuner and raise the changed strings slowly. Open Am sounds warm and spacious when it is right, but sloppy upward retuning is how people turn a good idea into a stiff, sour-feeling guitar.

Use Open Am Tuner

What are the notes in Open Am tuning?

Standard tuning is:

E A D G B E

Open Am tuning changes the guitar to:

Open Am notes

E - A - E - A - C - E

Scientific pitch notation: E2 - A2 - E3 - A3 - C4 - E4

When you strum all six open strings together, you get an A minor chord.

That is the whole point of Open Am. It keeps the grounded A-root feel that makes Open A attractive, but it swaps the major 3rd for a minor 3rd. That single change shifts the guitar from bright and triumphant to darker and more reflective before you fret anything.

From standard tuning, these are the strings that change:

6th string: E stays at E
5th string: A stays at A
4th string: D up to E
3rd string: G up to A
2nd string: B up to C
1st string: E stays at E

That detail matters. Open Am is not just "Open A, but sadder." It keeps much of the same A-based open-string logic, but it also keeps most of the same upward-tension tradeoff. Two strings rise a whole step and one rises a half step. If you ignore that reality, the tuning can feel worse than it should.

Why guitarists use Open Am

Built-in minor mood

The open strings already spell an A minor chord, so the guitar sounds darker and more emotional before you add any left-hand work.

Strong for drones and fingerstyle

Open Am rewards ringing bass notes, suspended melody notes, and arrangements that leave air around the harmony.

Useful for slide without a bright major center

If you like the directness of open-tuning slide but do not want every phrase to lean major, Open Am gives you a moodier base.

Different from the usual open-tuning defaults

A lot of players know Open G, Open D, and Open A first. Open Am can feel more distinctive when you want open resonance without the same cheerful major color.

Players usually choose Open Am because they want a real harmonic shift, not just a lower pitch. It is useful when you want the guitar to feel open, droning, and simple to move around on, but you want the emotional center to stay minor.

Why Open Am is less casual than Open Dm or Open Em

This is the practical reality that matters most.

Open Dm and Open Em both give you open-minor color with fewer tension concerns than Open Am. Open Am, by contrast, asks you to tune multiple strings upward from standard.

Do not ignore the tension question

If you want a dark open-minor sound with the fewest mechanical tradeoffs, Open Dm is usually the easier first experiment.

Open Am is worth learning because the A-root sound is different and useful, but it is not the most forgiving open-minor tuning to reach from standard.

That does not make Open Am a bad tuning. It just means you should choose it for the sound, not because you assumed every open-minor tuning is equally easy on the guitar.

How to tune from standard to Open Am safely

If you want true Open Am, move slowly and pay attention to feel.

Quick Open Am setup

Start in standard tuning so your reference point is trustworthy.
Leave the 6th string alone at E.
Leave the 5th string alone at A.
Raise the 4th string from D up to E carefully.
Raise the 3rd string from G up to A carefully.
Raise the 2nd string from B up to C slowly.
Leave the 1st string alone at E.
Recheck all six strings because the added tension can pull nearby strings slightly out of place.
Strum the open guitar gently and make sure it sounds clearly minor, settled, and not half-way between Open A and something vaguely wrong.

A quick sanity check is to compare the open 6th, 4th, and 1st strings. They should all be E in different octaves. Then compare the open 5th and 3rd strings. They should both be A.

Common mistake

The 2nd string is where people often drift into the wrong tuning.

If that string lands on C#, you are in Open A, not Open Am. The minor color depends on landing on C natural.

If the guitar starts feeling too stiff while you are tuning up, stop pretending it will magically improve at the last turn of the peg. Back off, let the guitar settle, and decide whether the sound is worth the extra tension on that instrument.

What changes when you actually play in Open Am?

Open Am gives you an obvious mood shift, but it also changes what the guitar naturally wants to do.

1. Straight barres no longer sound bright and major

In Open A, straight barres give you major-chord movement with a bright center. In Open Am, the open tuning starts from a minor chord, so the emotional base changes immediately. That can be exactly what you want, but it means you should stop expecting the same polished major payoff.

2. The guitar rewards slower, more spacious phrasing

Open Am usually sounds better when you let strings ring, separate bass and melody, or leave a little room between attacks. You can strum in it, but it often shines more when the arrangement breathes.

3. Standard chord shapes stop meaning what you think

Some familiar shapes still produce useful sounds, but they are not naming the same chords they would in standard tuning. If you keep grabbing old fingerings automatically, you will confuse yourself fast.

4. Slide and fingerstyle both make sense here

Open Am is not just a novelty tuning for one dark chord. It works well for fingerpicked patterns, droning accompaniment, and slide parts that want a darker center than Open A. If your right hand is still messy, fix that first with guitar fingerpicking patterns for beginners. The tuning does not rescue weak control.

Open Am vs Open A vs Open Dm

These are the comparisons that matter most in practice.

Tuning	Notes	What changes
Open A	E-A-E-A-C#-E	Same A-based open-string framework, but the open chord is major instead of minor and feels brighter from the first strum.
Open Am	E-A-E-A-C-E	Open strings form an A minor chord, which gives you the same rooted openness with a darker built-in mood and similar upward-tension concerns.
Open Dm	D-A-D-F-A-D	Another open-minor tuning with a lower, roomier register and fewer upward-retuning tradeoffs from standard.

Choose Open A if you want bright open-major movement. Choose Open Am if you want the same A-root openness with a darker minor center. Choose Open Dm if you want open-minor color in a lower, looser, more forgiving retune.

If you want another open-minor comparison with a stronger E-root feel, Open Em is the obvious reference point.

Do you need different strings or a setup change for Open Am?

Sometimes.

Open Am is not automatically a problem, but it is also not a tuning you should treat casually on every guitar.

What to watch in Open Am

Do not rush the upward retune. Sneak up on the changed notes instead of cranking straight past them.
If the guitar already feels stiff in standard, pay attention. Open Am can push a marginal setup into an unpleasant one.
If you only need the sound occasionally, treat Open Am as an experiment, not a permanent home by default.
If fretted notes sound rough after retuning, check tuning stability and setup before blaming the tuning label.
If you are unsure how string gauge affects feel, read the guitar string gauge guide.

If the guitar behaves badly in Open Am, do not assume the tuning name is the whole story. Work through why your guitar goes out of tune and how to know if your guitar is in tune before blaming the tuning itself.

Is Open Am good for beginners?

Usually not as a first alternate tuning.

The musical idea is simple enough, but the physical retuning is less forgiving than Drop D, Half Step Down, or Open Dm. Beginners often rush upward retuning, overshoot the note, or ignore the fact that the guitar suddenly feels stiffer than expected.

These basics should be stable first:

Once those are clear, Open Am becomes much easier to use intentionally instead of wandering into it by accident.

Common Open Am problems

The open chord does not sound clearly minor

Check the 2nd string first. If it drifted up to C#, you are in Open A instead of Open Am.

The guitar feels tighter than expected

That is normal. Three strings were raised. Open Am is not as aggressive as some high-tension experiments, but it is still not a relaxed retune from standard.

The open strings sound good, but fretted chords feel harder to name

That is also normal. Open tunings change chord logic. If you keep judging the guitar by standard-tuning shapes, you will think the tuning is wrong when it is really just different.

The arrangement sounds muddy instead of spacious

That is usually a playing problem, not a tuning problem. Too many ringing low strings, weak muting, or crowded strumming can turn a good minor tuning into blur.

Final takeaway

Open Am is worth learning if you want an open tuning that keeps the grounded feel of an A-based setup but replaces the built-in major brightness with a darker minor sound. It works well for droning accompaniment, slide, fingerstyle, and moodier songwriting. The main caution is mechanical, not musical: getting there from standard means raising multiple strings. If your guitar handles that well, Open Am can be a distinctive and useful tuning. If it does not, lower-tension open-minor options like Open Dm may be the smarter starting point.

Tune to Open Am now

Use the Open Am tuner to raise the changed strings carefully, let the guitar settle, and make sure the open chord sounds clearly minor before you start playing.

Tune to Open Am