How To Play Musical Duplets

When playing or writing music, sometimes you’ll want to subdivide a beat into a rhythm that can be tricky to notate. It might not divide easily in half or in quarter like other types of musical notes. For these situations we need to use something called a tuplet.

In this post, we’re going to take a look at a type of tuplet called a duplet and how they’re written and used.

What is a Duplet?

A duplet is a type of tuplet that allows you to play two notes in the time of three notes.

They work in the same way as a triplet – which is where you play three notes in the time of two – but in reverse.

How do Duplets Work

When we’re in compound time the beat is always a dotted beat.

In other words, each beat can be divided into three.

For example, the time signature 6/8 tells us there are six quavers (eighth notes) in a bar.

We group those quavers into two groups of three with each group of three quavers adding up to a dotted crotchet (dotted quarter note).

But, what if we wanted to have two equal notes in the time of one dotted crotchet beat?

It’s in these situations that we use a duplet.

We indicate a duplet in the same way as a triplet but instead of using the number three above the notes, we use the number two.

The quaver duplet above is played in the same time as it takes to play three normal quavers.

Alternate Ways to Write Duplets

When writing a duplet for notes without beams (crotchets, minims etc) you can also use a bracket over the top to show which notes the duplet applies for.

There is another way to write a duplet by using dotted notes.

For example, the duplet below each quaver is actually worth 3/4 of a beat which is the same as a dotted quaver.

We can use a dotted quaver to achieve the same rhythm like this:

These two bars are played and sound exactly the same, they’re just different ways of writing the same thing.

Got a question about duplets?

Duplets can be hard to understand, especially when converting music from one time signature to another.

If you have any questions about duplets that we haven’t covered in this lesson, just post a comment below and we’ll do our best to answer.

Dan Farrant

Dan Farrant

Dan Farrant, the founder of Hello Music Theory, has been teaching music for over 10 years helping thousands of students unlock the joy of music. He graduated from The Royal Academy of Music in 2012 and then launched Hello Music Theory in 2014. Since then he's been working to make music theory easy for over 1 million students in over 80 countries around the world.

Leave a Comment

Your email address will not be published. Required fields are marked *

Welcome to Hello Music Theory! I’m Dan and I run this website. Thanks for stopping by and if you have any questions get in touch!

40+ Music Theory Resources

Download my free eBook with all my favourite music theory resources.