Song Rig

Constant Motion

John Petrucci · Systematic Chaos · 2007

Tone Overview

What Makes This Sound Unique

Petrucci at his most technically intense — a rapid, technically demanding riff that becomes one of Dream Theater's heaviest tracks. The guitar tone is very tightly gated and defined: a high-gain Mesa Boogie with active pickups (DiMarzio LiquiFire/Crunchlab) ensures each note in the rapid passages is audible and distinct. This is not a tone for compression or muddiness.

Signal Chain

1Music Man John Petrucci Signature (DiMarzio pickups)
2Mesa Boogie Road King II
3TC Electronic G-System (effects)

Amp Settings

Gain / Volume10

Bass6

Mid5

Treble7

Presence9

Maximum gain with high presence — the speed of the riff requires every note to speak clearly, which demands aggressive presence and tight gating. Mids slightly scooped for the clinical separation. High presence allows each attack to cut through in the rapid tremolo-picked passages.

Technique

How to Play It

Alternate-picked rapid riff at high BPM — the main riff requires completely even alternate picking at high tempo. The right hand must maintain absolute consistency; any deviation in pick depth or angle affects note articulation at speed. One of the technically demanding rhythm guitar passages in progressive metal.

Budget Alternative

Achievable With

Guitar with low-impedance humbuckers → Mesa Boogie at maximum gain with noise gate → high presence. Practice the riff with alternate picking at 50% speed first.

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