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7:4 Polyrhythm Lesson

Practise 7 against 4 with a playable generator: a 28-slot counting grid, pulse timings, a practice ladder, common mistakes and drum, piano and guitar examples.

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How fast is 7:4 at a given tempo?

With the 4-note layer selected as the BPM reference, one shared cycle lasts 4 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.

Timings for 7:4 when the BPM follows the 4-note layer
TempoOne cycle4-note spacing7-note spacingOne slot
50 BPM4.8 s1,200 ms686 ms171 ms
60 BPM4 s1,000 ms571 ms143 ms
70 BPM3.43 s857 ms490 ms122 ms

What 7 against 4 feels like

Seven against four spreads seven even attacks across four base beats. Its twenty-eight-slot grid is useful for checking exact placements at a slow tempo. As you get comfortable, keep the four as a physical pulse and sing the seven as a continuous phrase instead of speaking every slot.

The usual mistake. Players tend to rush the middle of the seven so that the last note lands on the next downbeat. It should not: the seventh note arrives four slots before the downbeat. Practise the seven side alone with the four side muted until the spacing is even, then bring the four back quietly.

Count 7 against 4 out loud

Count 28 equal slots. Both sides land together on slot 1. The 7-side alone lands on slots 5, 9, 13, 17, 21 and 25. The 4-side alone lands on slots 8, 15 and 22. Beat numbers, Konnakol syllables and hands all sit on the same 28 slots. Ivory is the 4-side, orange the 7-side and gold is both together.

Beat 1 of 4
Slot 1234567
Count 1234567
Konnakol TaKaDiMiTaKiTa
Hands B···R··
Beat 2 of 4
Slot 891011121314
Count 2234567
Konnakol TaKaDiMiTaKiTa
Hands LR···R·
Beat 3 of 4
Slot 15161718192021
Count 3234567
Konnakol TaKaDiMiTaKiTa
Hands L·R···R
Beat 4 of 4
Slot 22232425262728
Count 4234567
Konnakol TaKaDiMiTaKiTa
Hands L··R···

Left hand plays the 4, right hand plays the 7, B is both hands together.

Speed the same ratio up past twenty pulses a second and 7 against 4 stops being a rhythm and becomes a harmonic seventh, 969 cents wide. Same ratio, same object.

How to practise 7:4 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 4 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 4.
  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 4. Both sides still play. Tap only the 4-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 4 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 4 against it. Same notes, different gravity. Listen for: The cycle is the same length; now the 4 is the one drifting.

Where 7 against 4 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 nadai: seven to the beat

    • Voice & Konnakol
    • Hand percussion

    Seven per beat has a name and a syllable set in Carnatic music: misra nadai, spoken Ta Ki Ta Ta Ka Di Mi. Against the usual four per beat it is 7:4 inside every beat, recited daily by students long before anyone writes a septuplet.

    HearSay the seven syllables in a beat, then across four beats. The grid on this page shows twenty-eight slots; the 7-side lands on every fourth one.

    PlayClap four, recite seven. The phrase splits naturally as 3 + 4 (Ta Ki Ta, Ta Ka Di Mi), which is the trick to keeping it even.

    Hear it this way, 56 BPM
  • Seven soft notes over a bar of four

    • Drums
    • Guitar & bass

    Jazz and fusion players smear seven evenly across a bar to lift a phrase out of the grid without changing the tempo. Drummers do it with ghost notes on the snare, guitarists with a seven-note run, both with the feet or the band holding four.

    HearKick on the 4-side, wood on the 7-side. The seven never sits still against the beat; that constant slide, resolving on 1, is the sound people call "floating".

    PlayFeet on the 4-side. Hands play the 7-side as quiet strokes, accenting only the one that coincides with the downbeat.

    Hear it this way, 60 BPM
  • Septuplet rolls in programmed drums

    • Producers

    After triplet and quintuplet hi-hat rolls comes the septuplet: seven hits in the space of four. It reads as a fast, slightly stumbling roll that snaps back onto the kick.

    HearClick on the 7-side over a kit on the 4-side. Compare with the 5:4 page: the drift is the same shape, just tighter.

    PlaySet the 4-side as your kick and draw the 7-side as hats. Export the loop and drop it into your sequencer as a reference for the feel.

    Hear it this way, 64 BPM