xaoc Devices — Sopot

Fractaos Manual PDF

Using Kaona Fractaos to Build Full-Length Eurorack Songs

Fractaos is not just a “weird oscillator.” It is much closer to a 4-voice fractal sound engine with:

That combination is unusually important for songwriting, because the biggest obstacle in Eurorack is often not making a good sound, but making enough contrast, structure, recall, and arrangement states to sustain a track for 4–8 minutes.

Fractaos is one of the rare Eurorack modules that can help with that directly.

What Fractaos is best at in a song context

From the manual, Fractaos can cover multiple musical roles:

That means you can use it in at least three different “songmaking” roles:

  1. As the main sound source for most of the track
  2. As a specialized texture/chord/drone/percussion voice alongside other modules
  3. As a scene-based arrangement module using presets and MULTI mode

The third point is the most important for full-length songs.

Why Fractaos is unusually good for arrangement

A lot of Eurorack patching gets stuck in loop-land because:

Fractaos addresses that with:

So instead of thinking of it as “an oscillator,” think of it as a song-state generator.

The central strategy: use Fractaos for contrast across sections

A full song needs contrast across time:

Fractaos gives you several dimensions of contrast without repatching:

So a song on Fractaos should not be thought of as “one patch evolving forever.”
Instead, treat it as a small cast of reusable characters.

Example:

That is how you get from a loop to a song.

Best companion modules for turning Fractaos into songs

To make full-length tracks, Fractaos benefits from modules that provide:

1. Sequencing and song structure

Use with:

What you want from a sequencer:

Fractaos becomes much more song-capable when driven by a sequencer that can change sections deliberately.

2. Mixers and VCAs

You need arrangement control outside the module:

Even though Fractaos has output levels, external VCAs and mutes are how you stage entries/exits over time.

3. Effects for section differentiation

Fractaos wants space-processing:

Different effects sends help turn the same core timbre into intro/verse/chorus variations.

4. Clocking and event generation

For transitions:

These let you automate section changes and rhythmic density.

5. Modulation sources

Fractaos already has internal motion, but full songs benefit from macro modulation:

Especially useful for Morph, Texture, Spread, Chaos, and Pitch CV inputs.

Best ways to use Fractaos in a full song

1. Use it as a self-contained “band” in MULTI mode

This is probably the strongest songwriting use.

In MULTI mode, each of the 4 voices can have:

That means one Fractaos can behave like:

Example full-song patch

Run Fractaos stereo out into: - mixer - compressor/saturation - delay/reverb sends

Use a sequencer like Hermod+, Oxi One, or Vector to: - sequence each MIDI channel independently - mute/unmute channels by section - transpose chord channels - trigger different note densities

Why this works for songs

Now the arrangement is not one loop. It is four coordinated roles with separate entry/exit control.

2. Build sections by saving intentionally different presets

Preset memory is key.

Do not save random sounds. Save section-function presets.

For example:

Then use:

Smart preset strategy for songs

Create preset families where only a few dimensions change:

Bass family

Lead family

Pad family

That gives you repeatable section changes without losing musical identity.

3. Use Drone mode as your arrangement glue

Drone mode is one of the best tools here for turning patterns into songs.

In Drone mode: - the sound is continuous - all 8 oscillators can be spread - Spread goes from unison to octave spread to predefined chords/microtunings - MIDI/CV can still transpose individual pairs

This is perfect for:

Song idea

Drone mode helps solve the “what happens between loops?” problem.

4. Use Spread as a section macro

Spread behaves very differently depending on mode:

This is huge for arrangement.

Practical song uses of Spread

In normal mode

Use Spread for: - widening choruses - making bass rougher in later sections - moving a lead from focused to unstable

In Drone mode

Use Spread for: - intro unison -> chorus chord expansion - transitions from one harmonic color to another - microtonal interludes - tension by moving through denser tunings

Excellent performance trick

Patch a slow CV source or manually ride Spread during transitions while the sequencer keeps the same notes.
The harmony and perceived size can change dramatically without changing the sequence itself.

That is a classic full-song trick: same pattern, new orchestration.

5. Use drum fractals for transitional percussion, not just full drums

The manual makes clear that Kick, Tom, Snare, HiHat, and Cymbal are real-time percussion models, not samples.

They are available only as the main fractal, and Morph can blend them with a geometric primitive.

This makes them especially good for:

Not the best use

Trying to make Fractaos your entire drum machine all the time.

Better use

Use it for: - one signature kick layer - metallic snare tail - fractal cymbal wash - tuned tom motif - percussive lead that appears in one section

Pair with dedicated drum modules: - BIA / Basimilus - Queen of Pentacles - WMD Crucible / Fracture / Chimera - sample players like Assimil8or, Bitbox, Squid Salmple

This gives you stable drums from other modules and signature transitional percussion from Fractaos.

That is much more song-useful.

6. Use Fractaos as the harmonic center, and simpler modules as support

Because Fractaos is spectrally rich and animated, it works best when other voices are more function-specific.

A strong song-oriented rack pairing would be:

This solves a common problem: if everything in the rack is equally complex, the track becomes dense but not structured.

Let Fractaos be the color, and let simpler modules be the skeleton.

Song-building patch recipes

Recipe 1: Fractaos as full track core

Modules

Patch concept

Song form

This is likely the most direct way to make full tracks.

Recipe 2: Fractaos as evolving chord/drone machine

Modules

Patch concept

Use Fractaos almost entirely in: - Drone mode - chord-scanning Spread region - texture/geometric blend presets

Then let the rest of the rack handle: - kick/snare/hat - bassline - lead melody

Why this works

One of the hardest parts of Eurorack arrangement is making tracks feel like they have a world around the groove.

Fractaos can be that world: - shifting harmonic cloud - wide stereo bed - evolving resonant pad - tuned tension layer - microtonal bridge between sections

This is especially effective in ambient techno, IDM, soundtrack, industrial, experimental pop, and cinematic electronica.

Recipe 3: Fractaos as “chorus machine”

Keep verses relatively dry and minimal using other modules.
Bring Fractaos in only when you need the track to “open up.”

Verse

Chorus

This gives you a reliable large-scale contrast with a single mute/unmute move.

Recipe 4: Fractaos for transitions and fills

A full song lives or dies on transitions.

Use Fractaos for: - risers - chord blooms - spectral swells - tom fills - chaos bursts - filtered noise bridges - metallic impact tails

Patch

This gives you recognizable “song punctuation.”

How to structure a full-length song with Fractaos

Here is a practical arrangement workflow.

Step 1: define 4 roles

Before patching, assign roles:

Or if using other voices in your rack:

Do not leave it open-ended. Role clarity is how songs get finished.

Step 2: design 2–3 presets per role

Not 20 presets. Just enough for sections.

For example: - Bass intro - Bass main - Bass aggressive

Step 3: map sections to roles

Example:

Section Bass Lead Pad Texture
Intro off off drone thin yes
Verse 1 main sparse low subtle
Chorus 1 main hook lush yes
Breakdown off off drone dark big
Chorus 2 aggressive hook wide lush yes
Outro off fragments drone thin fade

This is essentially your arrangement chart.

Step 4: automate mutes and transpositions

Use sequencer scenes, mute modules, or VCAs.

You do not need huge parameter automation if: - voices enter/leave - harmony shifts - density changes - effects sends change

Step 5: reserve manual gestures for major moments

Use your hands for: - Spread - Morph - Texture - switching Drone on/off - effect send amount - mixer mutes

These are better performance gestures than constant micro-tweaking.

Specific Fractaos controls that are best for musical development

Fractal Type

Best used for: - preset-defined section changes - major identity swaps - intro vs chorus contrast

Usually not the first thing to wiggle constantly in a song unless you want drastic changes.

Primitive Type

Great for changing the behavior of motion and timbral interaction.
Better as a composition choice or preset family difference than a frequent performance move.

Chaos / Primitive Chaos

Excellent for: - tension build - making later sections rougher - increasing instability before a drop - transitioning from tonal to noisy

Use slow CV or manual rides.

Depth / Primitive Depth

These are stepped and not CV-modulated.
Better used as preset-level structural choices.

Morph

One of the best performance/song controls. Use it for: - verse restraint vs chorus richness - attack/tail blend on drum models - gradually revealing the primitive influence

Texture

Another top-tier macro control. It affects: - resonance - formants - filter intensity - organic micro-detunings

This is excellent for making sections feel more “alive” without rewriting patterns.

Speed / Amount

Great for: - motion density - rhythmic breathing - LFO-based development - adding animation in later sections

Pitch

Useful for global transposition or live octave shifts.

Great module combinations with Fractaos

Fractaos + Hermod+

Very strong if you want: - MIDI sequencing - polyphony - multitimbral channel management - song sections - automation lanes

Hermod+ can turn Fractaos into a compact song workstation.

Fractaos + Oxi One

Excellent for: - multiple MIDI channels - poly sequencing - generative but recallable structures - performance scenes

Fractaos + Pamela’s Pro Workout

Use Pam’s for: - synced modulation into CV inputs - trigger generation for CV/gate voices - macro ramps during transitions - clock division for slower structural movement

Fractaos + Planar 2

A very musical pairing. Map joystick-recorded motion to: - Morph - Texture - Spread - Chaos

This creates replayable section gestures.

Fractaos + a sampler/looper

Pair with: - Morphagene - Lubadh - Bitbox - Assimil8or

Use sampler for: - vocals - field recordings - transitional audio markers

Fractaos then becomes the harmonic/timbral engine while the sampler adds identifiable song moments.

Genre-specific ways to use it

Techno

Ambient

IDM / experimental

Synth pop / soundtrack

Limitations to be aware of for songwriting

To use Fractaos well in full songs, note these constraints from the manual:

1. Single stereo output

Even though it is multivoice internally, it is not giving you four separate outs.
That means internal balances matter, and external arrangement via per-voice processing is limited.

So for songs: - use MULTI voice volumes carefully - complement with other modules that have separate outputs - treat Fractaos as a grouped instrument, not a full mixer replacement

2. Some parameters are stepped or less CV-friendly

Depth is stepped and not CV modulatable.
So not every parameter is ideal for smooth live morphing.

3. Preset voices in MULTI share output space

You can’t fully isolate every part for different external effects chains unless using external role separation elsewhere in the rack.

4. Texture/drum models are constrained as primitives

That’s fine musically, but means some combinations are intentionally limited.

These are not dealbreakers; they just suggest the best strategy is: - use Fractaos as a powerful grouped voice system - use other modules for independent stems and structural anchors

A very practical full-song workflow

Workflow A: compose first, patch second

  1. Decide song sections on paper
  2. Assign Fractaos roles by section
  3. Save/load presets intentionally
  4. Program sequencer scenes
  5. Rehearse transitions using Spread, Morph, Texture, Drone

This works better than exploratory patching if your goal is finished songs.

Workflow B: capture sections as live takes

  1. Patch a strong groove
  2. Record 5–10 minute improvisation
  3. Use Fractaos controls to create clear section changes
  4. Edit best moments later in DAW or tape-style recorder workflow

Fractaos excels at this because its macro controls create audible large-form changes.

Example full-length song blueprint

Intro

Groove entry

Verse

Pre-chorus

Chorus

Breakdown

Final chorus

Outro

That is a complete song arc using Fractaos as the core dramatic engine.

Best mindset for making songs with this module

The best way to succeed with Fractaos is:

In other words:

Fractaos helps solve the full-song problem because it provides memory, multitimbrality, harmonic spread, percussion options, and dramatic timbral contrast inside one module. Those are exactly the things most Eurorack patches lack when they get stuck as great 16-bar loops.

If you want, I can also turn this into any of these:

  1. a “Fractaos song patch cookbook”
  2. a recommended companion module list by budget
  3. a step-by-step techno/ambient/full-song patch plan
  4. a cheat sheet of the best Fractaos settings for bass, pads, leads, and drums

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