7:5 Polyrhythm Generator

How fast is 7:5 at a given tempo?

With the 5-note layer selected as the BPM reference, one shared cycle lasts 5 beats. The table gives the cycle length, the spacing of each layer and one counting slot at three practice tempos. Changing the reference changes the playback speed; muting a side does not.

What 7 against 5 feels like

Seven against five joins a seven-note phrase to a five-note phrase across one shared cycle. Learn each layer alone first: both must remain evenly spaced when the other is added. The thirty-five-slot grid shows the placements, while the combined rhythm gives you a shorter pattern of attacks to listen for.

The usual mistake. Because 7 and 5 share no factor, the two sides never coincide except on the downbeat, and the closest near-misses are only one slot apart. Do not merge those into flams: keep the tempo low enough that a single slot is still audible as a gap.

Count 7 against 5 out loud

Count 35 equal slots. Both sides land together on slot 1. The 7-side alone lands on slots 6, 11, 16, 21, 26 and 31. The 5-side alone lands on slots 8, 15, 22 and 29. Beat numbers, Konnakol syllables and hands all sit on the same 35 slots. Ivory is the 5-side, orange the 7-side and gold is both together.

Left hand plays the 5, right hand plays the 7, B is both hands together.

Speed the same ratio up past twenty pulses a second and 7 against 5 stops being a rhythm and becomes a septimal tritone, 583 cents wide. Same ratio, same object.

How to practise 7:5 in 8 steps

Start around 56 BPM. Everything below uses the generator on this page: Hear Base and Hear Counter isolate a side, the Hands view shows the sticking, Tap along scores your timing, and Practice tools open silent gaps or ramp the tempo. Move on when a step feels even for three cycles.

1. Hear both sides. Play it and let the 5 be the beat you nod to. Do not count yet. Listen for: The two sides meet once per cycle, on 1. Everything else is the 7 drifting across the 5.
2. Count it out loud. Switch to the Hands view and say the syllables with the clicks until they feel even. Listen for: Every hit has a word. Silent slots are the spaces between words.
3. Tap the 5. Both sides still play. Tap only the 5-side along with it. Listen for: Your taps sit inside the click, not beside it. Perfect means within 30 ms.
4. Tap the 7. Now tap only the 7-side while the 5 keeps you honest. Listen for: 7 even taps that land back on 1 with the other side.
5. Both hands together. Tap both sides with the guide still playing. Keep it slow until the meeting point is calm. Listen for: One clean composite line, not two people arguing.
6. Take the guide away. Two cycles play, two go silent. Keep both hands going through the silence. Listen for: When the click comes back, you are still on 1.
7. Speed it up. The tempo climbs one BPM per cycle toward 86. Stop when it stops feeling even. Listen for: The relationship stays the same at every tempo; only the space between hits shrinks.
8. Swap sides. Feel the 7 as the beat and play the 5 against it. Same notes, different gravity. Listen for: The cycle is the same length; now the 5 is the one drifting.

Where 7 against 5 turns up

3 places musicians actually meet this ratio, from traditions and notated idioms to studio habits, each with a setup you can hear. Every link loads this generator at the tempo, sounds and view that show the idea best.

• Misra against khanda nadai

  • Voice & Konnakol
  • Hand percussion
  • Theory

  Almost nobody plays 7:5 as a groove. Where it does live is in advanced Konnakol: misra nadai (seven) recited over khanda nadai (five), two odd gears at once. It is a control exercise, and a good one.

  HearThirty-five slots per cycle and only one shared attack. Neither side is a pulse you can lean on, so the ear has to hold both as equals.

  PlayClap five and recite Ta Ki Ta Ta Ka Di Mi over each clap first, then over the whole cycle. Very slow tempo, and stop after each cycle.

  Hear it this way, 48 BPM

• Two prime cells phasing

  • Producers
  • Theory

  Composers and producers use 7:5 the way they use two odd loop lengths: two cells that refuse to line up. In a step sequencer, tracks of seven and five steps give you the polymeter cousin; the generator here plays the true ratio inside one shared cycle.

  HearSped up past twenty pulses a second this ratio becomes a septimal tritone, the most restless interval in the just-intonation family. Slowed down, that restlessness is what you hear as rhythm.

  PlayLoad two pitched sounds and let it run at a low tempo while you listen for the once-per-cycle meeting point. Then open the harmony sweep on this page and hear the same ratio as a chord.

  Hear it this way, 50 BPM

• A limb-independence ceiling

  • Drums
  • Piano

  For drummers and pianists 7:5 is a summit, not a destination: if the hands can hold seven against five at a slow tempo, every everyday ratio below it feels roomy.

  HearUse the hands view and mute a side at a time. Each side alone is dead simple; the difficulty is entirely in holding both.

  PlayLeft hand on the 5-side, right hand on the 7-side, one cycle then rest. Count the composite as one line before splitting it, as the eight-step ladder above suggests.

  Hear it this way, 44 BPM