# Chaos A.D. Drum Setup: Igor Cavalera's Groove Metal Revolution > Complete drum gear breakdown for Sepultura's landmark Chaos A.D. album. Discover Igor Cavalera's 1993 kit, the revolutionary groove-focused approach, and how this album bridged thrash and tribal metal. **Type:** Album Drum Setup **Drummer(s):** [Igor Cavalera](/llms/drummers/igor-cavalera.md) **Band / Album:** Sepultura — *Chaos A.D.* (1993) **Genre:** Groove Metal / Thrash Metal ## Overview Released on October 19, 1993, "Chaos A.D." marked Sepultura's artistic transformation from pure thrash metal into something heavier, more primal, and more groove-oriented. This album is the missing link between the relentless speed of "Arise" and the full tribal immersion of "Roots." At the heart of this evolution was Igor Cavalera, just 23 years old but already a veteran with nearly a decade of Sepultura behind him. Working with legendary producer Andy Wallace at the historic Rockfield Studios in Wales, Igor stripped away excess and focused on one thing: making bodies move. The results were revolutionary. The iconic opening riff of "Refuse/Resist" — with Igor's militaristic snare pattern beneath Max's shouted vocals — announced immediately that this was a different Sepultura. Gone were the constant double-bass barrages of "Arise." In their place: space, groove, and a rhythmic approach that would influence everyone from Korn to Machine Head. "Chaos A.D." wasn't just a transitional album — it was a template. The half-time breakdowns, the tribal undercurrents, the focus on pocket over speed: these elements would define groove metal and lay the foundation for nu-metal's emergence later in the decade. This article breaks down every piece of gear Igor used during these groundbreaking sessions, the recording techniques that captured the raw power, and how this album changed the trajectory of heavy music. ## Gear Breakdown - **Drums:** Pearl Pearl Masters Custom (Black finish) - **Snare:** Pearl Pearl Free Floating Steel, 14" x 6.5" - **Cymbals:** Paiste — Paiste RUDE and 2002 Series - **Hardware / Pedals:** Pearl P-880 Powershifter; Pearl H-880; Pearl D-1000; Pro-Mark 5B Wood Tip - **Heads:** Remo Emperor Coated (batter), Remo Ambassador Snare Side (resonant) - **Snare tuning:** Medium-high tension for balanced crack and body ### Igor's 1993 Setup: Less Is More For "Chaos A.D.," Igor Cavalera continued with Pearl drums but made a crucial decision: simplify the setup. Coming off the technical assault of "Arise," he recognized that the new material required a different approach — one that prioritized feel over flash. The Pearl Masters Custom kit with maple shells provided the warm, punchy tone that would define the album's sound. Unlike the tight, clicky drums of typical thrash, Igor tuned these drums lower and more open, creating a sound that filled space and demanded attention through power rather than speed. The single 22" bass drum was significant. While Igor had been known for blazing double-bass work, "Chaos A.D." demanded restraint. The deeper shell (16" depth vs. typical 14") gave each kick more presence and sustain — essential when playing half-time grooves where every hit needs to land like a hammer. The rack toms (10" and 12") were positioned for quick tribal-influenced patterns, while the two floor toms (14" and 16") provided the low-end thunder for the album's breakdown sections. This four-tom setup gave Igor all the voices he needed without overwhelming the songs. Andy Wallace's production captured the drums with unusual openness for metal. Rather than gating every hit, he let the drums breathe in the stone rooms of Rockfield Studios. The result was organic and powerful — a sound that would influence metal production for years. ### The Military Crack of Chaos The snare sound on "Chaos A.D." is one of the most distinctive in metal history. From the military cadence of "Refuse/Resist" to the explosive backbeats of "Territory," Igor's snare cuts through every mix with commanding authority. He achieved this with a Pearl Free Floating Steel snare — a drum known for its versatility and projection. The Free Floating system, which suspends the shell from the top and bottom hoops without direct contact, allowed the steel shell to resonate fully, producing an open, powerful crack. At 6.5" depth, the drum offered substantial body while maintaining the cutting attack needed for groove metal. Igor tuned it medium-high — tight enough for articulation during fills but open enough for the fat backbeats the songs demanded. The steel shell's bright, cutting tone was essential for the "Refuse/Resist" intro. Those militaristic snare hits needed to slice through the silence before the guitars arrived. Andy Wallace captured this with close miking, letting the natural crack of the drum speak without excessive processing. Throughout the album, the snare serves as the rhythmic anchor. In slower sections, it drives the groove. In faster passages, it maintains precision. Igor's consistent technique — hitting the center of the drum with full-arm strokes — produced the powerful sound that made these rhythms so impactful. ### Paiste Power: Dark and Heavy Igor's cymbal setup for "Chaos A.D." combined Paiste's RUDE series (raw, aggressive, durable) with their classic 2002 series (musical, powerful, defined). This hybrid approach reflected the album's dual nature — brutal when needed, groovy when required. The 14" Heavy Hi-Hats were essential for the album's groove focus. Unlike the constant 16th-note thrash patterns of earlier records, "Chaos A.D." featured hi-hat work that breathed and accented. The Heavy model provided the weight needed for the slower tempos while remaining articulate during faster sections. The RUDE crashes (18" and 19") delivered the explosive power Sepultura needed. These aren't subtle cymbals — they're designed for volume and aggression. Perfect for punctuating the half-time breakdowns that defined the album's heaviest moments. The 2002 Heavy Ride provided definition for grooves without the typical "ping" of jazz rides. Igor could ride during verses without overwhelming the guitars, then crash on it during choruses for added power. The bell was prominent and cutting — useful for accent patterns. The China cymbal became a signature element. Those trashy explosions announcing breakdowns and riff changes gave "Chaos A.D." its aggressive edge. Igor positioned it flat and high for maximum impact. Andy Wallace captured the cymbals with room mics that let them bloom naturally. The stone walls of Rockfield added sustain and dimension that became part of the album's character. ## Key Facts - Recorded at Rockfield Studios, Wales — legendary facility behind Queen's "Bohemian Rhapsody" - Producer Andy Wallace brought clarity while maintaining aggression - Igor was 23 years old, confident enough to slow down and groove - First hints of Brazilian percussion that would explode on "Roots" - "Refuse/Resist" became Sepultura's signature song - The album that made groove metal a genre - Single bass drum with deeper shell for more weight - Lower tuning than "Arise" for groove-focused sound - Maple shells for warmth and presence - Four-tom setup for tribal patterns and breakdowns - Drums allowed to ring naturally in the mix - Estimated kit value: $2,500-3,500 (1993) / $4,500-6,500 (vintage today) - Estimated snare value: $350-450 (1993) **Source:** https://metalforge.io/articles/chaos-ad-drum-setup **More LLM resources:** [Site index](/llms.txt) · [Full database](/llms-full.txt) · [Master FAQ](/llms/faq.md) · [Drummer index](/llms/index.md) *Last updated: 2026-06-16 · Source: [MetalForge.io](https://metalforge.io)*