Free Music Lab

Free · from 2:3 to 7:15

Polyrhythm metronome

Hear and see two pulses share one cycle, and practise until you can feel them.

3:2

three against two

Layer A · 3 beats

Layer B · 2 beats

Changes apply at the next cycle, so the downbeat is never cut.

Practice track (MP3)

Layer A and B sounds match the settings above.

1:1:01

Total length1:01

Tips

  • Try tapping A with one hand and B with the other.
  • Groups of 3 or 4 add accents that drift across the cycle.

Pairs · 10 at this level

How to use the polyrhythm metronome

  1. Pick a pair with the + and − buttons or from the list of pairs (for example 3:2).
  2. Press Play. The outer ring is layer A and the inner ring is layer B.
  3. Set the tempo, sound and volume of each layer, and mute one to practise the other.
  4. Turn on groups of 3 or 4 to add accents that drift across the cycle.
  5. With Auto tour, the metronome moves to a new pair every few cycles.

Why a circle?

In a polyrhythm both layers divide the same cycle differently. The circle makes that visible: each layer splits the lap into equal parts and both always meet at the top. You can see at a glance where every hit falls and why 3:2 sounds the way it does.

A practice plan by level

  • Beginner: 2:3 and 3:4. Clap one layer, just listen to the other.
  • Mid: up to 5:4 and 4:5. One hand per layer.
  • Advanced: up to 7:9, with accent groups.
  • Expert: everything up to 7:15, auto tour and tempo-ramp tracks.

Ready to go beyond polyrhythms? Try the odd-time lab with groupings like 5+5+3+5 in the style of Tigran Hamasyan.

Frequently asked questions

+What is a polyrhythm?

Two (or more) even pulses played at the same time that divide the same span of time differently. In 3:2, one layer plays three even beats while the other plays two, and both start together again at the top of every cycle.

+How do I practise 3 against 2?

Start slowly (50–60 BPM). Clap or tap layer A, just listen to layer B, then add it with your other hand. Saying a phrase like 'pass the golden butter' (3:2) or 'nice cup of tea' (3:4) out loud helps you feel where the hits fall.

+Which pairs can I play?

Every pair where the smaller side is 7 or less and the larger side is 15 or less, from 2:3 up to 7:15. The level selector limits the list so beginners start with 2:3 and 3:4.

+What does the tempo (BPM) refer to?

It follows layer A. At 60 BPM, layer A's beats are one second apart, and layer B fits its beats into that same cycle.

+Can I download a practice track?

Yes. In Practice track (MP3) choose a loop length, a tempo ramp from 60 to 140 BPM or a mix of pairs, then create and download the MP3. It's made in your browser.

+Does it work on phones?

Yes. The sounds are designed to stay audible on phone speakers. Switch off silent mode on iPhone if you don't hear anything.