# Producing drone ambient on iPad in the zaké / 36 / PITP tradition The sonic world of zaké, 36, and the Past Inside the Present label represents a specific and refined branch of ambient music — one built on **tape-degraded loops, harmonic ambiguity, field recording integration, and emotional sincerity over technical showmanship**. Both zaké and 36 have explicitly stated they are "not gearheads," which is revealing: this aesthetic emerges from intuitive layering and patient listening, not from complex synthesis patches or elaborate signal processing. The good news for an iPad-based producer is that AUM's modular routing, combined with the AUv3 plugins you already own, can replicate and extend every technique these artists employ. What follows is a technically specific blueprint for doing exactly that. ## The PITP sound: what makes it work and why "pad ambient" fails Understanding what distinguishes the Past Inside the Present aesthetic from generic ambient requires dissecting several simultaneous qualities. zaké has described his starting point as "a concise yet potent melody, or perhaps a poignant chord progression, and at times, even an evocative field recording" — a nucleus from which layers accrete. 36's Dennis Huddleston works similarly, describing his core sound as "driving melodies that dig deep into your head and let the repetition take control, **mutating and shifting on a macro level**, so you only discover how much it's changed by the very end." The key word is *macro*: changes happen across minutes, not bars. The PITP label — founded in late 2018 by zaké (Zach Frizzell) and Isaac Helsen in Indianapolis — describes itself as "the home of a passionate, collaborative artistic community in pursuit of the world's most inventive and engaging quiet music." That word *quiet* is load-bearing. This isn't music that asserts itself. It occupies the threshold between presence and absence. The mastering, handled primarily by James Bernard at Ambient Mountain House (and sometimes by Rafael Anton Irisarri or Drew Sullivan of Slow Dancing Society), reflects this: wide dynamic range, restrained loudness, and warmth without density. What distinguishes this from "pad ambient" is the **source material degradation cycle**. Generic pad ambient starts clean and stays clean — a synth pad through reverb. The PITP sound starts with something already imperfect (a tape-warped orchestral fragment, a field recording, a barely-audible radio transmission) and processes it through chains that add further character while removing definition. zaké's Orchestral Tape Studies series was built from "fragments of antiquated and enigmatic classical 78s and cassettes" subjected to "profound metamorphosis through deft refinement and rigorous manipulation." The result carries the ghost of its source material — you sense something recognizable underneath without being able to identify it. Several sonic signatures recur across PITP releases: **analog hiss as a compositional element** (not noise to be removed but texture to be cultivated), **pitch instability from tape wow and flutter** (creating microtonal drift that synthesizers don't naturally produce), **harmonic ambiguity** (chords that hover between major and minor, often through detuning rather than traditional voicing), and **field recordings used as subliminal structural punctuation** rather than foreground events. zaké admits to using "actual radio transmissions in 99% of all tracks" — not as recognizable content but as spectral seasoning, ghost voices buried so deep they register as unease rather than language. The Stasis Sounds for Long-Distance Space Travel trilogy, zaké and 36's flagship collaboration, embodies all of this. zaké described the approach as "slow loops, minimal structure, and wide open textures to capture the sense of drifting alone through deep space." Reviewers describe it as "gleaming tape loops, thoughtful synths that stretch tantalisingly into the infinite distance." Part III introduced something heavier — liner notes reference "a sustained rumble, honoring that speaker-eating heaviness" drawn from zaké's fondness for Khanate and Sunn O))). The trilogy demonstrates that this aesthetic has range: it can be luminous or dark, but it always moves slowly and rewards patient listening. ## Source sound design: generating raw tonal material that breathes The fundamental error in drone ambient production is reaching for a synth preset. The PITP aesthetic demands source material with **inherent imperfection and acoustic memory** — sounds that carry traces of physical origin even after heavy processing. **Pianoteq 8 as a drone machine.** Your U4 upright, harp, celeste, and electric piano packs are potent drone sources once you understand which parameters to exploit. The critical insight from Modartt's own documentation: "When adjusting parameters to extreme values, one may create instruments having unusual or even unrealistic properties." For drone work, the most important parameter is **soundboard impedance** — Modartt confirms that "the sustain duration is directly associated to the duration of the vibrations of the free strings, and these depend on the soundboard impedance." Push impedance to maximum for dramatically extended sustain. Then set **hammer hardness to near-zero** across all velocity layers (piano, mezzo, forte) to eliminate bright transients, creating a felt-muted character. Set **Direct Sound Duration to zero** — this removes the initial "piano" attack entirely, leaving only resonant and sympathetic components. **Maximize sympathetic resonance** so that every note excites the full string set, then hold the sustain pedal continuously and play very soft (velocity 10–30), widely spaced intervals — fifths and octaves work well. The accumulated sympathetic wash becomes your drone. For the celeste pack, **shorten string length** below default to increase inharmonicity, producing metallic, bell-like partials ideal for shimmering upper-register texture. The harp pack responds well to high sympathetic resonance with moderate unison width (**60–70%**), creating slow beating patterns between near-unison strings — this natural chorus is the organic "shimmer" that synthesizers approximate poorly. The condition slider deserves attention: moving it toward "worn" and right-clicking to randomize the seed generates thousands of uniquely detuned variations where each note has slightly different pitch drift. Layer two instances of Pianoteq with different condition seeds and you get rich, non-repeating interference patterns. **Mononoke for self-modulating drone synthesis.** Bram Bos's Mononoke was literally designed for this. Its two 4-voice engines route voices into each other, creating FM-like interactions where overtones pulse and shift through interconnected invisible LFOs. The latchable performance pads sustain indefinitely — latch three or four pads for a base drone, then add and remove others in real time. Because the inter-voice feedback creates harmonic content impossible with standard subtractive synthesis, Mononoke patches never truly repeat. Load it in AUM, latch several pads, and chain with processing — you have a self-evolving drone engine that runs indefinitely. **Gauss for authentic tape loop behavior.** Gauss is a tape field looper, not a granular processor, and this distinction matters. Record a sustained tone or Pianoteq chord into Gauss, then manipulate tape speed and direction to create deep, evolving drones. Layer multiple Gauss instances in AUM at different loop lengths and speeds — the organic timing drift between instances creates the natural phasing that makes long-form tape ambient compelling in the William Basinski tradition. The sound-on-sound overdub capability lets you build layers that accumulate and slowly decay, which is precisely zaké's working method with physical tape loops translated into the digital domain. **Fluss for granular transformation.** Bram Bos's granular engine (developed with Hainbach) works as both instrument and effect. Import a short field recording or Pianoteq sample, and three independent granular playheads create overlapping, evolving textures. The physics-based kinetic controls are the key feature: flick a parameter slider and it continues moving with momentum and friction, creating self-modulating motion that substitutes for LFOs but with organic, non-repeating behavior. The shimmer reverb feeds processed audio back into the grain engine, creating recursive textures that evolve over hours. **PaulXStretch for spectral time-stretching.** This free app (by Sonosaurus, not Bram Bos) is arguably the single most essential drone tool on iPad. It uses FFT-based spectral processing to stretch any audio to effectively infinite length while maintaining smooth, harmonic quality. Take a **five-second Pianoteq chord and stretch it into a twenty-minute ambient drone**. The spectral smoothing inherent in the algorithm creates ethereal, harmonically rich textures impossible to achieve any other way. In AUM, load it as an effect, feed audio from any source, capture it, then stretch while adjusting FFT resolution — different resolution settings on different source material yield subtly different timbral results. Multiple instances running simultaneously with different sources create layered, evolving environments. **Feedback networks as tone generators.** AUM's bus system supports feedback routing explicitly. Create a feedback loop by routing a channel's output to a bus, receiving that bus on another channel, processing through effects, and sending back to the original bus via a bus send node. The bus send knob becomes your feedback amount — **start at 50% and raise carefully**. Place filters in the feedback path so that each iteration rolls off highs and lows, creating organic spectral decay. A brickwall limiter somewhere in the loop prevents runaway oscillation. Feed the loop briefly with a Pianoteq note or field recording, then mute the source — the feedback network sustains and transforms the material on its own, producing self-generating textures that evolve continuously. This is how recursive reverb techniques work in the drone ambient tradition: the reverb "mines" hidden harmonics from source material, sustaining them indefinitely until the original source erodes into an abstract harmonic cloud. ## The plugin arsenal: specific tools for specific jobs **Reverb architecture.** FAC Alteza is your primary reverb for this style — its all-pass delay network with dual pitch shifters in the feedback path creates the ascending/descending shimmer tails that define ambient space. The feedback blend control at high settings generates self-sustaining harmonic clouds. BLEASS Shimmer complements it: two independent pitch shifters, each placeable at three points in the signal chain (pre, post, or feedback), with reverb tails up to **30 seconds**. The feedback pitch-shift mode feeds pitch-shifted reverb back into itself for infinite cascading harmonics. Unfiltered Audio's Tails adds a different character entirely — its **global sample rate knob** degrades the reverb tail into crunchy, lo-fi textures when lowered, and the Deep algorithm creates massive atmospheric washes. Use these on separate send/return buses in AUM rather than as channel inserts: set each to 100% wet, and control per-source wet/dry via individual bus send amounts. **Spectral freezing and convolution.** AudioThing's Frostbite 2 provides four freeze modes — Spectral/FFT, Reverb, Convolution, and Granular — plus ring modulator and feedback delay modules in configurable serial/parallel routing. The Spectral mode uses FFT to hold a moment's frequency content and randomize its phase data, creating shimmering, slowly morphing pads from any source. The internal LFO modulating freeze parameters ensures textures never become static. AudioThing's Fog Convolver 2 loads two impulse responses simultaneously across six routing modes (single, serial, parallel, true stereo, mid/side) with **740+ factory IRs** including unconventional captures from organic compounds, test equipment, and unusual objects. Loading an IR from the "Unusual" bank transforms a simple tone through the spectral fingerprint of a physical object — a technique for achieving the "acoustic memory" quality discussed earlier. **Degradation and character.** AudioThing's Wires models a 1970s Soviet MN-61 military wire recorder — not tape, but magnetic wire, which has a fundamentally different lo-fi character: thinner, more ghostly, with peculiar frequency response and eerie self-oscillating echoes. This is the plugin for creating the haunted, numbers-station quality that lurks at the edges of darker PITP releases. Unfiltered Audio's Lo-Fi-AF offers four rearrangeable processing sections (Convolution with broken-mic IRs, Spectral with MP3 artifacts, Digital with bitcrusher, Analog with tape saturation and wow/flutter) — the order matters dramatically, and experimenting with arrangements yields wildly different results. Crushing first then reverbing creates harsh ambient; reverbing first then crushing creates degraded beauty. Needlepoint adds physical-modeling vinyl character — wow, flutter, dust, and surface noise that creates a bed of analog texture beneath digital drones. **Filtering and spectral animation.** Bram Bos's Skulptur is a **10-band performance filterbank** with 48dB filters and three animation modes. Feed a drone through it and use cycle mode with very slow speeds for glacially evolving spectral movement — like an extremely sophisticated phaser that selectively emphasizes and suppresses frequency bands over time. The built-in noise generator shaped by the animated filterbank creates filtered noise drones (wind, breath, electronic hiss textures). AudioThing's Filterjam (which is free) adds brightness or metallic ring-modulation-like overtones in its multiply mode. FAC Phazer with extremely slow LFO rates produces gradual timbral shifts over minutes — specifically praised by users for pad and soundscape work. **Delay as texture generator.** AudioThing's Outer Space 2 (Roland RE-201 model) with three tape types and the worn-out tape mode adds beautiful degradation to repeats. At high feedback with the worn tape, repeats build into self-generating drone clouds. BLEASS Delay's standout feature is its **cumulative frequency shifter** — each delay repeat is shifted further in frequency, creating spiraling Shepard-tone-like textures that expand infinitely. Bram Bos's Kosmonaut combines multitap delay, tape looper with variable sound-on-sound decay, autopanner, and Haas effect — the tape looper section with variable decay creates layers that build and slowly fade in the Brian Eno tradition. ## AUM signal architecture: building a drone production environment AUM's power for drone ambient lies in its bus routing system, which enables parallel processing, send/return effects, feedback loops, and subgrouping — all simultaneously. Here is a specific session architecture designed for PITP-style production. **MIDI strips** (processed before audio): Load Rozeta LFO instances in MIDI strips — each provides three independent MIDI CC LFOs that you route to synth parameters via AUM's MIDI Matrix. For drone work, set LFO rates extremely slow: **0.02–0.1 Hz** (one full cycle every 10–50 seconds). Route one LFO to Mononoke's filter cutoff, another to Pianoteq's output level, a third to a reverb parameter. Rozeta Particles generates semi-random MIDI note patterns from bouncing particles — route into Mononoke set to latch mode for generative note triggers that slowly add and release drone tones. For even slower modulation, use Bram Bos's Mozaic to script custom MIDI behaviors — the community library on PatchStorage includes generative ambient tools, and you can write scripts generating pitch values that drift over minutes. **Audio channel architecture:** Create five to seven audio channels, each with a distinct spectral and textural role. Channel 1: **drone foundation** (Mononoke or Pianoteq as instrument, followed by parametric EQ for spectral placement, with bus sends to shared reverb and delay buses). Channel 2: **texture layer** (Fluss processing an imported field recording or sample, with bus send to reverb). Channel 3: **field recording** (AUM's file player looping a nature recording or radio capture, high-passed to remove rumble, with subtle reverb send). Channel 4: **feedback generator** (receives from a feedback bus, processes through high-pass at 40 Hz, low-pass at 8 kHz, a reverb instance at 100% wet, saturation for soft clipping, and sends back to the feedback bus at 70–85% — this is your self-generating texture engine). Channel 5: **reverb return** (receives from the shared reverb bus, hosts FAC Alteza or Tails at 100% wet, with a small send back into the feedback bus to seed it with reverberant material). Channel 6: **delay return** (receives from the delay bus, hosts Outer Space 2 or BLEASS Delay at 100% wet). Channel 7: **master bus** (receives from the mix bus, hosts parametric EQ for final spectral balance, FAC Maxima as a safety limiter, and outputs to hardware with recording enabled). **The feedback loop in detail.** AUM's feedback routing works through its bus system. Route Channel 1's output to Bus LOOP via a bus send (amount: 20–30%). The feedback channel (Channel 4) receives from Bus LOOP, processes through the filter/reverb/saturation chain, and sends back to Bus LOOP at 70–85%. Channel ordering matters: place the seed channels before the feedback channel in AUM's layout. Feed a Pianoteq chord or Mononoke drone into the loop briefly, then pull back the send amount — the loop sustains and evolves the captured material, with the filters rolling off frequencies each iteration so the texture darkens and thins over time. The one-buffer-of-latency inherent in AUM's feedback adds subtle timing characteristics that are actually desirable. **Pre-fader versus post-fader sends** matter for drone work. Set reverb sends to **pre-fader** when you want reverb level independent of the source fader — this means you can fade a source to silence while its reverb tail continues to ring, creating natural transitions between sections. Set to post-fader when you want the reverb to follow the source level proportionally. **Slow crossfading without automation.** AUM lacks built-in recordable automation, which initially seems like a limitation but actually aligns with the live, intuitive PITP production philosophy. Workarounds: use Rozeta LFO routed to AUM's own channel volume parameters via MIDI Control for automated slow crossfades; use an external MIDI controller with faders mapped to channel volumes via MIDI Learn; or simply ride the faders manually during a live recording pass, which is arguably the most authentic approach to this style. ## Compositional architecture: how fifteen-minute drones sustain attention Drone music substitutes harmonic progression with **timbral evolution**. Interest comes from slow changes in spectral content, subtle pitch drift, beating patterns between near-unison frequencies, dynamic swells, and the introduction and removal of textural layers. zaké's compositional philosophy is "evolutionary arrangements that don't follow traditional verse/chorus/middle-eight structure" — each piece has seed material that spawns variations through gradual transformation. **Layer management is the compositional act.** Build from **three to six layers maximum**, each occupying a different spectral band. Introduce layers one at a time over minutes, not seconds. Each new layer should alter the harmonic character of the whole. Remove layers equally slowly — the listener should barely notice the subtraction, only sensing that something has changed. The Stasis Sounds trilogy typically uses "five or six tracks at most," demonstrating that density comes from processing depth, not track count. **Slow harmonic drift** replaces chord changes. Rather than switching chords, crossfade between drone tones that are harmonically related — fifths, octaves, or microtonal intervals — over **60 to 180 seconds**. Slightly detune layers against each other to create beating patterns. At 1–3 Hz beating rates, the beating itself becomes the "rhythm" of the piece. Slower rates (below 0.5 Hz) create a sense of breathing or tidal movement. Follow the circle of fifths, changing pitch "only when a voice is silent" for almost imperceptible harmonic progression. **The structural role of field recordings and near-silence.** In zaké's work, field recordings "fill the negative space with spectral reverberations" — barely present, they register subconsciously as atmosphere rather than content. Structurally, they function as **transitions between timbral states**: a wash of distant traffic or wind can mask the crossfade between one drone configuration and the next. Near-silence and dynamic valleys prevent listener fatigue in long-form work. A drone without breathing becomes numbing. Think of dynamic dips as the piece inhaling. **Five-minute versus fifteen-minute structural thinking.** A five-minute drone piece sustains a single timbral arc — one slow transformation from state A to state B. A fifteen-minute piece requires **multiple nested arcs**: three to four distinct but overlapping timbral sections, each with internal evolution. Think of it as a slow zoom where each magnification reveals new detail. The first five minutes establish the base material and space. Minutes five through ten introduce the primary transformation — perhaps a harmonic shift, a new textural layer, or a gradual darkening through filter movement. Minutes ten through fifteen resolve or dissolve, either building to a climactic density or thinning to near-silence. **Automation as composition.** In the absence of harmonic rhythm, parameter automation becomes the primary compositional gesture. Automate filter cutoff sweeps over three to five minutes. Expand reverb decay gradually. Slowly widen stereo image. Each creates subliminal forward motion. Using multiple asynchronous Rozeta LFOs at non-related rates (0.05 Hz and 0.09 Hz, for example) creates complex, non-repeating modulation patterns — the piece literally never repeats, even across twenty minutes. **The "obligato" technique.** Add a small sonic event at unpredictable intervals — zaké's radio transmissions serve this function. A barely perceptible crackle, a ghost of a voice, a single high bell tone — these maintain subconscious attention without disrupting the meditative flow. In AUM, a file player on a separate channel with very low volume, playing a long field recording or radio capture, provides this automatically. ## Mixing drone ambient: managing density without mud Drone mixing presents a specific challenge: when everything occupies similar spectral space and similar temporal behavior, conventional mixing strategies fail. You cannot "feature" one element against a background because everything is background. **Ruthless high-pass filtering.** Apply high-pass filters to every drone layer except your designated bass anchor. Dense, reverberant drones generate enormous low-frequency buildup that reads as mud, not warmth. Designate one element — perhaps a Mononoke bass drone or a sub-frequency from Bass-Mint — as the low-end foundation, high-pass everything else at **80–150 Hz**, and high-pass reverb returns at **150–200 Hz** to prevent reverb tails from filling the bottom end. **Spectral separation through processing, not EQ.** Rather than carving frequency bands with EQ (which thins the source), differentiate layers through **different processing characters**. One layer through Wires (ghostly, thin, mid-focused), another through Fog Convolver with a large hall IR (spacious, diffuse), a third through Lo-Fi-AF's analog section (warm, saturated). Each processing chain naturally occupies different spectral territory because it imparts different harmonic and resonance characteristics. **Depth through mid-side processing.** FAC Bandit splits audio into three frequency bands with independent processing per band — route low frequencies to center, keep mids moderate, and widen highs for shimmer. For reverb returns, process the sides separately from the center: the center stays tight and focused while the sides carry spatial information. This prevents the center from becoming "a mushy wash" while maintaining immersive width. **Stereo movement.** Use slow auto-panning on different layers at different, non-synchronized rates. The layers should never align in their panning cycles, creating smooth shifts like overlapping waves. Kosmonaut's autopanner handles this per-channel. The Haas effect (tiny timing differences between left and right) adds width without conventional panning — Kosmonaut includes this as a dedicated mode. **Loudness and dynamic range.** Professional drone ambient mastering typically targets **-14 to -17 LUFS integrated** with true peak at **-1.0 to -1.5 dBTP**. This is significantly quieter than most commercial music, and intentionally so — the music is designed for intimate, low-volume listening. Compression should be minimal: bus-level tape saturation with only **2 dB of input gain** for glue, or a low-ratio (1.5:1) compressor with slow attack and release if needed. The goal is cohesion, not loudness. FAC Maxima on the master bus serves as a transparent safety limiter, catching rogue peaks without shaping dynamics. **Warmth without losing clarity.** Saturation generates even-order harmonics that add perceived warmth and presence without EQ boosts. Rather than EQ-boosting highs when a mix sounds dull, add a subtle saturator to generate new high-frequency harmonic content. Unfiltered Audio's Tails with its sample rate knob slightly reduced adds warmth to reverb tails specifically. Layer this with Needlepoint's vinyl wow-and-flutter for pitch instability that reads as "analog warmth" — the micro-detuning is what makes physical media sound warm, not frequency response alone. ## Recommended signal chains for specific textures **Stasis Sounds-style deep space wash:** Pianoteq U4 (impedance maxed, hammer hardness zero, direct sound zero, sympathetic resonance maxed, sustain held, sparse fifths at velocity 15) → PaulXStretch (moderate stretch, medium FFT resolution) → FAC Alteza (long decay, subtle shimmer, pre-fader send) on a parallel bus, with Unfiltered Audio Tails (Deep algorithm, sample rate slightly reduced) on a second parallel bus. Blend the two reverb characters to taste. Add a field recording channel (radio static or distant wind) at **-24 dB** below the drone level. **Tape-degraded orchestral loop:** Import a short classical recording sample into Gauss → manipulate tape speed to half or quarter → enable overdub and let layers accumulate → send through Wires (wire recorder character) → through AudioThing Outer Space 2 (worn tape mode, high feedback, slow speed) → into BLEASS Shimmer (feedback pitch-shift mode, +12 semitones, long tail). This replicates zaké's Orchestral Tape Studies methodology entirely in the box. **Self-generating feedback texture:** Seed a feedback loop (configured as described in the AUM section) with a single Pianoteq celeste note → the loop sustains and transforms the metallic bell tone through filter erosion and reverb accumulation → simultaneously run Skulptur's cycle mode on the feedback channel for slow spectral animation → the texture evolves indefinitely, requiring only occasional manual adjustment of the feedback amount and filter positions. **Generative evolving drone:** Rozeta Particles (generative MIDI) → Mononoke (latched pads, inter-voice routing active) → Skulptur (slow cycle mode, 10 bands sweeping independently) → Silo (granular spatializer, high grain density, slow speed) → Tails (Shimmer mode). This chain produces a continuously evolving drone that never repeats, requires no manual input after initial configuration, and can run for hours. ## Conclusion: process over gear, patience over complexity The most technically important thing about zaké, 36, and the PITP aesthetic is also the least technical: **restraint**. These artists work with simple starting materials — a melody fragment, a tape loop, a chord — and apply patient, iterative processing rather than complex synthesis. zaké works "in quiet, during the hours of early morning and late night when the threshold between the conscious and the subconscious is at its most malleable." 36 describes wanting each track to feel like "repetition takes control," where transformation happens so slowly that "you only discover how much it's changed by the very end." Your iPad running AUM with the plugins described above is capable of producing work sonically indistinguishable from anything on the PITP catalog. The architecture — multiple source channels feeding shared effect buses, feedback loops for self-generation, Rozeta LFOs for glacial modulation, PaulXStretch and Fluss for spectral transformation — provides every tool the style requires. What it cannot provide is the willingness to sit with a single drone for twenty minutes, listening for the moment when one parameter change transforms the entire piece. That patience is the actual production technique. The plugins are just how you get there.