Polyrhythm: Definition and Use in Tool's Lateralus
Chapter 1

The Lateralus equation

Chapter 2

Breaking the grid

Chapter 3

Sacred geometry and visual math

Ch 2 · Breaking the grid
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mankai Drummer Danny Carey plays a legendary polymetric beat on the song Pneuma.

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mankai Breaking the Grid

We break the grid and watch the shifting signatures grow, Into a spiral sequence where the heavy rhythms flow.

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Complex structures require shared intuition, not rigid rules, to hold together.

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mankai The song Schism features a highly complex mathematical rhythm

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The complex math of Schism

mankai The celebrated song Schism keeps musicians perfectly synchronized by constantly shifting its rhythm between complex 5/8 and 7/8 time signatures.

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The fictional six-point-five meter

mankai Asymmetrical beat groupings prevent standard time signatures from ruining the rhythmic feel.

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Seven-beat cycles of 7empest
BETA

mankai Tap the irregular drum beats to master the seven-beat cycles of progressive rock.

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Fun Fact

Schism's rapid shifts: The song Schism features 47 time signature changes and moves through 12 different meters over its six-minute runtime.

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Glossary
polyrhythm (noun)
The simultaneous use of two or more conflicting rhythms in a musical composition. In 2001, drummer Danny Carey incorporated this technique into Lateralus to create complex, shifting rhythmic patterns.

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Quiz

Which song by Tool won a Grammy Award in 2002 for Best Metal Performance and is famous for its alternating 5/8 and 7/8 rhythm?

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mankai Escaping the Digital Time Grid

Break the grid / drift away / sync up again!

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mankai The rock band Tool rejects rigid digital time grids

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Quiz

What are the two primary alternating time signatures that form the iconic opening bass riff of Tool's "Schism"?

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mankai The rock band Tool created a fictional musical time signature.

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Quiz

Why is counting Tool's "Schism" as alternating 5/8 and 7/8 preferred over writing it in a standard 12/8 signature?

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Quiz

What fictional, fractional time signature did the members of Tool jokingly use to describe the unique feel of the song "Schism"?

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Quiz

From which 2019 Tool album does the mathematically complex, 11-minute track "Pneuma" originate?

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Quiz

Which famous drummer compared learning Danny Carey's drum parts on Tool's "Pneuma" to solving a complex mathematical equation?

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Quiz

What term do music producers use to describe the rigid, computer-aligned tempo map that the band Tool actively avoids in their songwriting?

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Quiz

Which instrument initiates the famous, crawling opening riff of Tool's "Schism" before the rest of the band joins in?

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