What is a trill?
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
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 (mordent) or lower note (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 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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