What is a trill and how to play it (piano)


A trill is one of the most common musical ornaments and can sound beautiful when done well. If you are not confident about your understanding of what a trill is or how to play it correctly, look no further. This is the only article you will need to become an expert on trills (well, in theory at least. You still have to do the practicing!).

What is a trill?

example of a trill
A trill at the end of Chopin's famous "Waltz in A Minor" (B. 150, Op. Posth.)

A trill (old name: “shake“) is a popular musical ornament that involves a quick alternation between two adjacent notes. In most cases, the alternation happens between the note indicated by the trill and the next (higher) note of the scale.

Composers use trills to add rhythmic and melodic interest to a musical passage.

How a trill is notated in music

trill symbol example 1
These are the two most popular ways to indicate a trill in modern music notation.

Example of a trill

Here is a Impressionist-era piece that starts on a very prominent trill. In fact, it has quite a few of them! As you listen, think about the effect the trill gives to the piece and why the composer may have decided to use it.

Example of a trill in “L’isle Joyeuse” by Claude Debussy

What note does a trill start on?

This is a very common question and one many students and music enthusiasts are confused about. Here is the simple answer:

Before the 1800s (Baroque & Classical Eras):
The trill started on the note above the one indicated by the trill. So for example if the note “E” was marked by a trill, you would start the trill on note “F”.

After the 1800s (Romantic Era up to present day):
The trill begins on the same note that is indicated by the trill. So if the note “E” is marked by a trill, you start the trill on “E” as well.

Trill vs. Mordent

The main difference between trills and mordents is in in the number of alternations between the adjacent notes. With mordents, we alternate only once between the principal note (the note symbolized by the mordent) and either the upper note (in the case of a mordent) or lower note (in the case of an inverted mordent). With trills, the number of alternations is longer, though the exact number will depend on the rhythm as well as the musician’s individual choice.

Also, trills by definition alternate with the higher note, while with mordents it can be either the higher or lower note (see diagram below).

A mordent is sometimes referred to as a short trill, which contributes to the occasional confusion between the two terms.


two trills

Two different symbols for trills. You may see any one of these symbols in modern music.


Two variations of mordents. The mordent (also known as “upper mordent“) alternates with the note above, while the inverted mordent (also known as “lower mordent“) alternates with the note below.


If you are an active musician, you are sure to come across many trills in your playing. For this reason, we hope that this article helped you get a better grasp of this popular musical ornamentation. To make your trills sound nice a sharp, be sure to spend enough time practicing them. Tip: if possible, use your stronger fingers on the trills, as this will give you better dexterity and control over how they sound. Happy trilling!

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