Sul Tasto

What it is

Sul tasto means bowing over or near the fingerboard, rather than in the usual position between the fingerboard and the bridge. The Italian translates as "on the fingerboard". This belongs to the bowing section.

The sound is soft, airy and hollow, with fewer upper overtones than a normal tone. Players and composers describe it as flute-like, which is why the alternative marking flautando is used to mean the same thing.

It is a contact point effect. Nothing about the left hand changes. The only variable is where the bow meets the string.

Why the sound changes

A string vibrates in a complex pattern. The fundamental pitch is accompanied by a series of overtones, and the balance between them determines the tone colour. Our free chromatic tuner helps with this between lessons.

Where the bow contacts the string determines which overtones are excited. Close to the bridge, the string is under more tension and resists more, and the bow excites a rich set of upper overtones, producing a bright and edgy sound.

Over the fingerboard, the string is at its most flexible. The bow excites fewer upper overtones and the sound is dominated by the fundamental. The result is soft, pure and slightly hollow.

Understanding this makes the technique intuitive rather than arbitrary. The bow is not doing anything unusual; it is simply being applied where the string behaves differently.

How it is produced

The bow moves toward the fingerboard, sometimes only slightly and sometimes far enough to be directly over it, depending on how extreme the effect should be.

Two adjustments are needed. Bow pressure must reduce, because the string is more flexible there and normal pressure will choke it. Bow speed usually increases slightly to maintain some sound with the reduced pressure.

The stroke is otherwise a normal detache or legato. The technique is entirely about placement.

Extreme sul tasto, bowing well up the fingerboard, produces a very quiet and diffuse sound with almost no definition. Some contemporary composers ask for exactly that.

What goes wrong

Too much pressure. The most common error. The player moves the bow over the fingerboard but keeps normal pressure, and the string is overloaded, producing a woolly, unfocused, sometimes crunching sound.

Not moving far enough. A small shift toward the fingerboard produces almost no audible change. Students often move an inch when they need to move three.

Losing pitch clarity. Because sul tasto suppresses upper overtones, intonation is harder to hear and easier to miss. The player must know where the note is rather than relying on the sound to confirm it.

Inconsistent placement. Drifting back toward the normal contact point mid-passage, so the effect fades.

How it is notated

The marking sul tasto appears above the staff, sometimes abbreviated sul tast. The French sur la touche and the German am Griffbrett mean the same.

Flautando or flautato is used interchangeably by many composers.

Return to normal is marked ordinario, ord., or naturale.

The musical effect

Sul tasto is used for atmosphere. It removes weight and presence from the sound, making a passage feel distant, veiled or unreal.

It is common at the very quiet end of the dynamic range, and in passages where the strings need to recede behind something else. Composers use it to change colour rather than volume, though the two usually go together.

In orchestral writing it creates a hushed, transparent texture that a normal pianissimo cannot achieve, because a quiet normal tone still carries its overtones while sul tasto removes them.

Where you meet it

Sul tasto is uncommon in Baroque and Classical repertoire and becomes frequent from the Romantic period onward. It is heavily used in twentieth-century and contemporary orchestral writing, where colour is a primary compositional concern.

Film and game scoring uses it constantly for exactly the same reason. It is the standard way to make strings sound distant or unsettling without changing the notes.

Students usually meet it first in orchestral parts rather than solo repertoire.

How it is taught

We start by having the student play a single sustained note and slowly move the bow from the bridge to the fingerboard, listening to the tone change continuously across the whole range.

That single exercise teaches more about contact point than any explanation, because the student hears the entire spectrum rather than two fixed positions.

Then the pressure and speed adjustments, then passages, then repertoire.

Sul tasto and the left hand

Nothing about sul tasto changes what the left hand does, but it changes how much the left hand can rely on feedback.

Under a normal contact point, a note slightly out of tune sounds obviously wrong because the overtones clash. Sul tasto suppresses those overtones, so the same error is far less audible while the player is producing it and far more audible to someone listening in the hall.

The practical consequence is that sul tasto passages need the intonation secured before the colour is applied. A player who practises the passage sul tasto from the start may never hear that it is out of tune.

Sul tasto in an ensemble

A section playing sul tasto must agree on how far along the fingerboard to go. Contact point is a continuum, not a switch, and two players an inch apart produce noticeably different colours.

Because the technique reduces volume as well as changing colour, a section using it will sit further back in the texture than the written dynamic alone would suggest. Conductors sometimes ask for sul tasto specifically to solve a balance problem rather than for its colour.

Most students pick bow technique like Sul Tasto up faster with weekly feedback than from any article. Private and group violin lessons are available in Lawrenceville, Suwanee and Berkeley Lake. Reach us on 470-789-2422 or book a no-commitment evaluation lesson.