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Danny Carey

Tool · Odd meters, polyrhythmic independence, and a hypnotic, orchestrated kit.

Sober

Tool · Undertow

Level 2

≈ 83 · 4/4

Prep with: Stage 1Foundations: counting in odd meters

Primary technique:
Dynamic groove control
Also trains:
Tom-driven fills, Restraint
Key groove:
A slow, brooding groove that builds tension without odd-meter complexity.
Signature fill:
Tom-led fill building into the chorus.
Transition:
Dynamic swell rather than a metric shift.
Listen for:
How the groove grows heavier without ever speeding up.
Training:
Trains dynamic build and restraint at a slow tempo.
Challenge:
Build the dynamic arc smoothly across the whole song without rushing.
  • Intro: Sparse, tense groove begins quietly.
  • Verse: Restrained groove, building weight.
  • Chorus: Full-kit, heavier dynamic.
Workout

Forty Six & 2

Tool · Aenima

Level 3

≈ 96 · 4/4

Prep with: Stage 1Foundations: counting in odd meters

Primary technique:
Linear groove
Also trains:
Ostinato hi-hat, Tom fills
Key groove:
A linear groove weaving kick, snare and hi-hat so nothing lands simultaneously.
Signature fill:
Linear fill flowing directly out of the main groove.
Transition:
Groove and fill blur together through linear phrasing.
Listen for:
How the groove keeps moving forward with no doubled hits.
Training:
Trains linear phrasing and independence between limbs.
Challenge:
Play the whole main groove with zero simultaneous limb hits.
  • Verse: Linear groove drives forward motion.
  • Chorus: Fuller linear pattern, more toms.
  • Outro: Groove intensifies to the fade.
Workout

Stinkfist

Tool · Aenima

Level 3

≈ 100 · 4/4

Prep with: Stage 1Foundations: counting in odd meters

Primary technique:
Ostinato hi-hat independence
Also trains:
Linear fills, Dynamic build
Key groove:
A steady ostinato hi-hat foot pattern under a shifting hand groove.
Signature fill:
Building fill into the chorus that keeps the hi-hat ostinato alive.
Transition:
Groove intensity builds section by section into a huge outro.
Listen for:
Whether the hi-hat foot ostinato stays steady through the fills.
Training:
Trains foot ostinato independence under hand-based fills.
Challenge:
Keep the hi-hat ostinato perfectly steady through every fill.
  • Verse: Ostinato hi-hat under a simple hand groove.
  • Chorus: Fuller groove, ostinato maintained.
  • Outro: Full-intensity extended groove.
Workout

Schism

Tool · Lateralus

Level 4

≈ 74 (feel shifts between 5/8 and 7/8) · 5/8, 7/8

Prep with: Stage 1Foundations: counting in odd meters

Primary technique:
Odd meter groove
Also trains:
Polymeter, Linear fills
Key groove:
A shifting groove alternating between 5/8 and 7/8 groupings.
Signature fill:
Linear fill that spans the meter change cleanly.
Transition:
Meter shifts from 5/8 to 7/8 without breaking the groove's feel.
Listen for:
The exact point the meter shifts between verse phrases.
Training:
Trains confident odd-meter counting and clean meter transitions.
Challenge:
Play through the meter changes without any hesitation or count loss.
  • Intro: Bass and drums establish the odd-meter groove.
  • Verse: Alternating 5/8 and 7/8 groupings.
  • Chorus: Fuller groove, same metric structure.
Workout

Lateralus

Tool · Lateralus

Level 5

≈ 100 (feel spans 9/8, 8/8, 7/8) · 9/8, 8/8, 7/8

Prep with: Stage 1Foundations: counting in odd meters

Primary technique:
Fibonacci-based odd meter
Also trains:
Tabla-influenced hands, Dynamic build
Key groove:
A verse structured around a fibonacci-like sequence of shifting meters.
Signature fill:
Hand-driven fill bridging each metric grouping.
Transition:
Metric structure itself acts as the song's main transition device.
Listen for:
How the groupings expand and contract like a spiral across the verse.
Training:
Trains the full fibonacci-style metric sequence and hand articulation.
Challenge:
Play the full verse metric sequence from memory without losing the pulse.
  • Intro: Sparse groove introduces the metric feel.
  • Verse: Shifting 9/8, 8/8, 7/8 groupings.
  • Chorus: Fuller groove, same underlying structure.
  • Bridge: Building intensity toward the climax.
Workout

The Patient

Tool · Lateralus

Level 4

≈ 82 · 4/4, shifting to 7/8

Prep with: Stage 1Foundations: counting in odd meters

Primary technique:
Hypnotic repetition
Also trains:
Odd meter shift, Dynamic build
Key groove:
A slow, meditative groove that repeats hypnotically before shifting meter.
Signature fill:
Subtle fill marking the shift into the 7/8 section.
Transition:
Smooth, patient build from a repeated groove into an odd-meter climax.
Listen for:
How subtly the groove evolves before the meter shift arrives.
Training:
Trains sustained hypnotic repetition and controlled meter shifts.
Challenge:
Sustain the repeated groove without any unintentional variation before the shift.
  • Intro: Sparse, repeated groove begins quietly.
  • Verse: Hypnotic repetition builds slowly.
  • Bridge: Shift into 7/8 groove for the climax.
Workout

Jambi

Tool · 10,000 Days

Level 4

≈ 105 · 4/4

Prep with: Stage 2Core grooves: linear phrasing

Primary technique:
Polyrhythmic ostinato
Also trains:
Groove weight, Linear fills
Key groove:
A heavy groove with a polyrhythmic layer running underneath the main pulse.
Signature fill:
Fill that briefly reveals the underlying polyrhythm before returning to the groove.
Transition:
Groove intensifies with the polyrhythmic layer becoming more prominent.
Listen for:
The secondary rhythmic layer running against the main groove.
Training:
Trains layering a polyrhythmic ostinato under a heavy main groove.
Challenge:
Keep both rhythmic layers clean and distinct through the whole groove.
  • Intro: Riff establishes the heavy groove.
  • Verse: Polyrhythmic layer under the main pulse.
  • Chorus: Full-kit intensity, layers more audible.
Workout

Wings for Marie (Pt 1)

Tool · 10,000 Days

Level 3

≈ 76 · 4/4

Prep with: Stage 5Advanced coordination: ostinato independence

Primary technique:
Hypnotic repetition
Also trains:
Dynamic build, Textural percussion
Key groove:
A slow, sustained groove built for emotional weight rather than complexity.
Signature fill:
Minimal fills, focused on texture rather than technical display.
Transition:
Gradual dynamic swell into the following movement.
Listen for:
How much space and patience is used compared to Tool's more technical material.
Training:
Trains long-form dynamic control and hypnotic repetition endurance.
Challenge:
Sustain the groove and its slow dynamic build for the full extended length.
  • Intro: Very sparse, atmospheric groove begins.
  • Verse: Sustained groove, slow dynamic build.
  • Outro: Peak dynamic before transitioning onward.
Workout

Pneuma

Tool · Fear Inoculum

Level 5

≈ 132 · 4/4, shifting feels

Prep with: Stage 4Fills & transitions: polymetric fills

Primary technique:
Orchestrated kit textures
Also trains:
Polyrhythm, Odd-meter fills
Key groove:
A driving modern groove using the full extended kit for texture and impact.
Signature fill:
Elaborate fill drawing on gongs, cymbals and toms across the huge kit.
Transition:
Textural percussion hits mark major structural transitions.
Listen for:
The auxiliary percussion textures woven into the core groove.
Training:
Trains orchestrating a groove across a large, textured kit.
Challenge:
Incorporate every auxiliary texture cleanly without disrupting the core groove.
  • Intro: Atmospheric, textural percussion introduces the piece.
  • Verse: Driving groove with orchestrated textures.
  • Instrumental: Extended section showcasing full-kit orchestration.
Workout

7empest

Tool · Fear Inoculum

Level 5

≈ 140 (varies widely) · 4/4, 7/8 and shifting meters

Prep with: Stage 1Foundations: counting in odd meters

Primary technique:
Metric endurance
Also trains:
Double kick, Polyrhythmic layering
Key groove:
An extended, metrically complex groove sustained across a fifteen-minute track.
Signature fill:
Extended double kick and tom fill sequences spanning odd-meter bars.
Transition:
Multiple full tempo and meter changes across the track's length.
Listen for:
How the piece shifts meter and tempo repeatedly without ever losing cohesion.
Training:
Trains full metric and physical endurance across a very long, complex track.
Challenge:
Play the full track from memory maintaining the pulse through every meter change.
  • Intro: Slow build, sparse groove.
  • Verse: Odd-meter groove locks in.
  • Instrumental: Extended double kick and polyrhythmic section.
  • Outro: Full-speed climactic groove to the end.
Workout