Viola Tuner

How to tune a viola by ear

A viola in standard tuning is tuned C3–G3–D4–A4, from the lowest and thickest string to the highest.

TuneStrings is designed for tuning by ear. Press a reference tone, play the matching string on your viola and adjust until the two pitches settle together.

Each reference tone plays long enough for you to listen properly rather than having to restart a short sample over and over. That matters when you are making the final small adjustment.

If the two notes are close but not quite matched, you may hear a slow pulsing or “beating” between them. As you tune closer, the beating slows down. When the pitches match closely, it almost disappears.

Standard viola tuning

These frequencies are based on the common reference pitch A4 = 440 Hz. If your ensemble uses another reference pitch, you can adjust it in the TuneStrings tuner.

The viola sits between violin and cello

The viola is the alto voice of the violin family. It is generally larger and lower in pitch than a violin, while remaining smaller and higher than a cello.

Its standard tuning makes that relationship easy to see:

Violin: G3–D4–A4–E5

Viola: C3–G3–D4–A4

Cello: C2–G2–D3–A3

The viola and cello therefore use the same note pattern, but the cello is tuned one octave lower.

The viola also shares its upper three strings – G, D and A – with the violin, while adding the lower C string instead of the violin’s high E.

Why start with the A string?

When musicians tune together, the A string is often the starting point.

In an orchestra, the reference A is traditionally given by the oboe. Once the A string is established, the other viola strings can be tuned in perfect fifths.

If you are tuning alone with TuneStrings, you can also simply start with the low C string and work upward. There is nothing wrong with either method.

Bow or pluck when tuning?

Plucking the string is convenient when the viola is clearly out of tune and you just want to get close quickly.

For the final adjustment, a steady bowed note is often easier to compare with a sustained reference tone. It gives you more time to hear whether your string is slightly sharp or flat.

Use a moderate bow stroke. If the attack is too hard, the pitch can move slightly before the string settles.

Pegs and fine tuners

Use the main tuning pegs for larger pitch changes and a fine tuner for small corrections when one is fitted.

If the note is already close, avoid making a large movement with the peg. Viola strings are under significant tension and the pitch can change quickly near the target.

Whenever possible, approach the final note from slightly below. This can help the string and peg settle more securely.

Tuning in perfect fifths

The viola strings are separated by perfect fifths: C–G, G–D and D–A.

Once the individual strings match the reference tones, try playing two neighbouring open strings together.

A well-tuned fifth has a particularly stable and open sound. If C–G, G–D or D–A sounds unsettled, check the individual strings again.

This is also excellent ear training. Over time you begin to recognise the sound of a clean fifth without relying entirely on a tuner.

Why TuneStrings uses sustained reference tones

A very short reference tone is enough to tell you roughly where the note is, but it is not always ideal for fine tuning by ear.

With a sustained tone you have time to play your own string, listen to both pitches together and hear the beating change as you adjust the instrument.

That is the idea behind TuneStrings. The tuner is not trying to replace your ears with a needle or display. The reference tone gives your ears something stable to work against.

You do not need perfect pitch to do this. What you are training is relative pitch – the ability to compare one pitch with another.

Strings and tuning stability

Strings make a major difference to both the sound of a viola and how comfortably it tunes.

New strings normally stretch after they are installed, so expect to retune them more often during the first playing sessions.

Older strings may gradually become less stable, less responsive or harder to match accurately. If one string behaves differently from the others, the problem may be the string rather than your tuning.

There is no single replacement schedule that suits every player. How long viola strings last depends on how much you play, the string type, your technique and the instrument itself.

A few practical viola tuning tips

Make small adjustments once you are close to the reference pitch.

Listen for the beating between your viola and the reference tone instead of trying to decide instantly whether the note is “right”. The movement between the two sounds gives you useful information.

After tuning all four strings, check them again. Adjusting one string changes the overall tension on the instrument slightly and another string may have moved.

Finally, play the open fifths C–G, G–D and D–A. If they feel stable and resonant, you are in good shape.

Frequently asked questions

What is standard viola tuning?

A standard viola is tuned C3–G3–D4–A4, from the lowest string to the highest.

What frequency is the viola A string?

At standard concert pitch, the open A string is A4 = 440 Hz.

Is a viola tuned the same as a cello?

The tuning pattern is the same, but the cello is one octave lower. Viola tuning is C3–G3–D4–A4, while cello tuning is C2–G2–D3–A3.

Is a viola tuned the same as a violin?

No. They share the G, D and A strings, but the viola adds a low C string while the violin has a high E string.

Why does an orchestra tune to the oboe?

The oboe traditionally provides the reference A for the orchestra. Players then tune their instruments to that pitch before checking the remaining strings or notes.

Should I tune a viola with the bow or by plucking?

Either works. Plucking is useful for getting close quickly, while bowing gives a longer sustained note that can make fine tuning by ear easier.

Do I need perfect pitch to tune a viola by ear?

No. Tuning against a reference tone uses relative pitch: you listen for whether your string is higher or lower than the reference and adjust until they match.