# Intellijel — Metropolix - [Manual PDF](../../manuals/metropolix_manual_v1.4_2022.04.04.pdf) --- [Metropolix Manual PDF](#) # Using Intellijel Metropolix to Create Melodic Components in Eurorack The **Intellijel Metropolix** is an unusually deep melodic sequencer. Even though it looks like an 8-stage pitch/gate sequencer, it’s really a **performance-oriented melodic composition system** with: - **2 pitch/gate tracks** - **8 modulation lanes** - **2 assignable outputs** - **3 assignable CV inputs** - **scale quantization** - **probability, ratchets, slide, accumulation** - **preset recall and chaining** If your goal is to create **melodic material**—basslines, leads, counterpoint, arpeggios, evolving motifs, chord movement, and modulation-driven phrasing—Metropolix is extremely capable. --- ## What this module does musically At its core, Metropolix gives you: - a set of **8 pitch sliders** for an initial melodic contour - per-stage **timing and gate behavior** - two tracks that can reinterpret the same stage data differently - modulation lanes that can animate pitch, scale, order, length, root, probability, slide, and more This means one programmed idea can become: - a **main melody** - a **harmonic partner** - a **bassline variant** - an **arpeggiated extension** - a **transposing phrase** - a **self-modulating generative line** --- # Core melodic building blocks ## 1. Pitch sliders as melodic skeleton The 8 pitch sliders define the basic note contour. With **scale quantization**, those slider positions become stable melodic intervals in a chosen scale. Useful global pitch tools: - **Scale + Root** - **Bottom Pitch = C or Root** - **Slider Octaves** per track (1–4 octaves) - **Slider Direction** per track (normal or inverted) - **Transpose** per track ### Musical use Program a simple contour with sliders: - up-step - leap - repeat - fall - resolve Then let each track reinterpret it differently. Example: - **TRK 1** = narrow 1-octave melody in C minor - **TRK 2** = same sliders, but transposed up a 5th, inverted, or spanning 3 octaves That immediately creates melodic relationships without reprogramming notes. --- ## 2. Two tracks for counterpoint and harmony A big strength of Metropolix is that **TRK 1 and TRK 2 share the main slider/switch structure**, but each track can have different: - order - length - clock division - swing - slide time - gate length - transpose - slider range/direction - per-stage pitch/gate/ratchet/probability/accumulation/CV ### Musical use This is ideal for melodic layering: #### A. Melody + bassline - **TRK 1** → lead voice - **TRK 2** → bass oscillator Use: - same slider pattern - TRK 2 lower transpose - slower division on TRK 2 - shorter sequence length on one track for phrase cycling #### B. Melody + counter-melody - TRK 1 = linear forward - TRK 2 = pendulum or odd/even - different stage skips and lengths This creates **interlocking melodic motion** from one shared source. #### C. Unison variation Send both tracks to similar voices: - one dry - one filtered/delayed/slid Use subtle differences in: - gate length - pitch pre/post - probability - order This gives “doubled lead” behavior without exact repetition. --- # Melodic timing and phrasing tools ## 3. Pulse count creates rhythmic phrasing for notes Each stage can last **1 to 8 pulses**. That changes how long a note occupies space. This matters melodically because note duration shapes phrase identity as much as pitch. ### Musical use Use long pulse counts on: - phrase starts - cadence tones - pedal notes Use short pulse counts on: - passing notes - ornaments - arpeggio-like movement For example: - Stage 1 = 3 pulses - Stage 2 = 1 pulse - Stage 3 = 1 pulse - Stage 4 = 4 pulses This turns a plain pitch pattern into a real phrase. --- ## 4. Gate type changes articulation Per stage you get: - **HOLD** - **MULTIPLE** - **SINGLE** - **REST** ### Melodic applications - **HOLD** = legato tie across stages - **SINGLE** = one articulated note even if stage lasts several pulses - **MULTIPLE** = repeated articulation on the same pitch - **REST** = silence, space, phrasing This is excellent for making melodic patterns feel played rather than mechanical. Example: - HOLD on a note before a slide - REST before phrase restart - MULTIPLE for repeated tonic or dominant pulses --- ## 5. Slide for legato and acid phrasing Per-stage **SLIDE** with global track slide settings gives expressive transitions. Slide types: - **Analog** - **Tempo** - **Acid** ### Musical use - Add slide only on selected approach notes - Use acid mode for classic tied melodic sequences - Use tempo slide for synchronized lead phrasing - Use analog for freer portamento feel Great for: - basslines - legato leads - gliding modal melodies - synthetic vocal phrasing --- # Advanced melodic variation ## 6. Per-stage pitch override The sliders are only the default. Each stage can have a **pitch override**. ### Musical use This is powerful for: - forcing important harmonic tones - changing just one note in a looping phrase - creating call/response variants between tracks - making one track diverge from the common slider pattern A useful strategy: - use sliders for broad melodic shape - use pitch overrides for “composed” anchor notes --- ## 7. Skip for phrase reshaping Skipping stages changes both rhythm and note order. ### Musical use A melodic phrase can become: - sparse - syncopated - asymmetrical - alternate-bar variation Very useful for: - verse vs chorus feel - switching between complete and reduced phrases - turning 8-stage material into 5- or 6-note motifs Also excellent when modulated with **Skip Invert** for phrase swapping. --- ## 8. Probability for melodic instability and life Probability can apply at: - **Stage** - **Pulse** ### Musical use Use probability to create: - ghost notes - variable ornaments - occasional melodic omissions - unstable motif repetition Examples: - 80% probability on passing tones - 50% probability on a decorative upper neighbor - 100% on structurally important notes This keeps melodies fresh without losing identity. --- ## 9. Ratchets for ornaments and repeated notes Ratchets subdivide pulses into repeated gates. ### Melodic use Ratchets are not just rhythmic—they create melodic ornament when combined with: - accumulation - slide - CV lane modulation - gate stretching Good uses: - stuttered repeated note on a climax tone - flutter before resolution - pseudo-trill or mordent effect on one stage - repeated bass pulse under moving harmony --- ## 10. Accumulation is one of the best melodic tools here The **ACCUM** function cumulatively transposes notes over time by scale degree. This is huge for melodic development. Per stage you can define: - transpose amount - trigger source (stage / pulse / ratchet) And with **LIM** options: - positive/negative limits - stage vs track mode - wrap / pendulum / random / hold - unipolar / bipolar - reset behavior ### Musical use #### A. Sequence evolution A simple 4-note melody can climb diatonically over repeats. #### B. Arpeggiated chord motion Use chord scales and accumulation to walk through chord tones over time. #### C. Canon-like development Track mode makes one stage’s accumulation affect the whole track, causing phrase-wide transposition. #### D. Generative tonal movement Random or pendulum accumulation creates melodic movement that stays musically constrained. This is one of the strongest features for writing **evolving melodic material**. --- # Scales, roots, and harmonic movement ## 11. Scale quantization keeps melodies musical Metropolix has many scales and chord shapes, plus 100 user scales. ### Musical use You can use scale quantization to make slider movement immediately usable for: - tonal melodies - modal melodies - pentatonic riffs - chord-tone constrained melodies - non-Western scalar movement --- ## 12. User scales for chord progressions and melodic harmony User scales store both: - scale pattern - root And can be sequenced via CV/modulation. ### Musical use Build a bank of custom scales representing chord tones, for example: - Cmaj triad - Amin triad - Fmaj triad - Gmaj triad Then modulate **Scale (User)** to move through harmonic centers while the same slider pattern keeps playing. This is an elegant way to create: - chord-following melodies - arpeggiated harmonic movement - phrase transposition with harmonic constraint This makes Metropolix unusually strong for **harmonic melodic sequencing** rather than just monophonic looping. --- # CV lanes and MOD lanes as melodic animators ## 13. Track CV lanes add one more melodic control stream per track Each note track includes a CV lane that can be: - continuous voltage - gate toggle You can route this out through OUT A or B. ### Musical use for melodies Use track CV lanes to animate the voice being sequenced: - filter cutoff per note - wavefold amount per note - FM amount per note - accent/velocity - envelope decay - oscillator timbre This turns a melody into a phrase with articulation and timbral contour. Examples: - brighter notes on high melodic peaks - accent every 4th note - longer envelope on cadence tones - timbral rise on phrase build --- ## 14. 8 MOD lanes can modulate melodic behavior internally Each MOD lane has: - 8 stages - its own order - its own length - its own clock division - assignable destination Destinations include many melodic parameters: - pitch pre - pitch post - root - user scale - play order - pulse count - probability - ratchet - stages length - stage offset - slide amount - gate length - loopy settings - accumulation settings ### Musical use This is where Metropolix becomes a full melodic ecosystem. #### A. Internal transposition Assign MOD lane to **Pitch Pre** for in-scale melodic motion. #### B. Chromatic destabilization Assign MOD lane to **Pitch Post**. #### C. Harmonic movement Assign MOD lane to **Root** or **Scale (User)**. #### D. Phrase restructuring Assign MOD lane to **Play Order**, **Stages Len**, or **Stage Offset**. #### E. Expressive articulation Assign MOD lane to **Probability**, **Gate Length**, or **Slide Amount**. This allows melodies to morph over time without external modules. --- # Performance-oriented melodic techniques ## 15. Loopy mode for live melodic improvisation Loopy lets you temporarily loop sub-sections of the sequence or play stages manually. ### Musical use This is outstanding for live melodic performance: - repeat one note as a pedal - isolate a 2–4 note motif - create fills by looping a mid-phrase fragment - manually “play” stages as a mini keyboard when stopped 1-finger and 2-finger loopy can create improvised melodic variation in real time. This is great for: - techno lead fills - live bassline mutation - breaking a phrase into hooks - performance transitions --- ## 16. CTRL knobs for expressive melodic macro control The two CTRL knobs can be assigned to melodic parameters such as: - Pitch Pre/Post/Offset - Root - Scale (User) - Probability - Ratchet - Slide Amount - Swing - Stages Len - Clock Div - Trk Out Swap ### Musical use These make excellent melodic macro controls: - **CTRL 1 → Gate Length**: articulation macro - **CTRL 2 → Slide Amount**: expressive phrasing - **CTRL → Root**: harmonic movement - **CTRL → Probability**: stable to unstable melody - **CTRL → Stages Len**: phrase contraction/expansion - **CTRL → Play Order**: melody permutation control Very playable. --- ## 17. AUX inputs for external melodic interaction Three AUX CV inputs can modulate internal melodic parameters. ### Musical use Patch external modulation into: - root - scale selection - pitch pre/post - play order - stages length - slide - probability - accumulation behavior That lets another sequencer, LFO, envelope, random source, keyboard, or pressure CV reshape melody in real time. Example: - slow random CV to **Root** - envelope to **Slide Amount** - gate pattern to **Skip Invert** - keyboard CV to **Octave** Now Metropolix behaves less like a fixed sequencer and more like an interactive melodic instrument. --- # Presets and composition workflow ## 18. Presets for melodic scenes Metropolix stores 64 presets. A preset can store: - track settings - stage settings - scale settings - optionally slider/switch/CTRL/AUX states ### Musical use Treat presets as: - verse melody - chorus melody - breakdown variation - transposed harmonic section - sparse/dense alternate states --- ## 19. Preset chaining for song-form melody Preset chains let you sequence preset changes over time. ### Musical use Create structured melodic arrangements: - Preset 1 = intro motif - Preset 2 = bass enters - Preset 3 = full lead phrase - Preset 4 = variation with different root/scale/order - Preset 5 = reduced outro loop This turns Metropolix into a **melodic song-form sequencer**, not just a phrase generator. --- # Practical melodic patch ideas ## Patch 1: Bassline + lead from one idea - **TRK 1 PITCH/GATE** → bass voice - **TRK 2 PITCH/GATE** → lead voice - Same slider contour - TRK 1: lower transpose, acid slide, shorter gate - TRK 2: longer gate, different order, higher octave Result: A coherent melodic pair from one gesture. --- ## Patch 2: Chord-following melody with user scales - Create user scales for progression chord tones - Lock user scale bank - Assign MOD lane or AUX to **Scale (User)** - Program lead phrase on sliders Result: One phrase follows chord changes without manually reprogramming notes. --- ## Patch 3: Evolving modal melody - TRK 1 = melody - MOD lane 1 → Root - MOD lane 2 → Probability - MOD lane 3 → Play Order - CV lane → filter cutoff on voice Result: Melody stays recognizable but keeps shifting tonally and structurally. --- ## Patch 4: Ornamented generative lead - Use a simple 4-stage motif - Add ratchets on one or two stages - Add stage probability to passing tones - Add accumulation with pendulum order - Use slide selectively Result: A melodic line that sounds composed but continues developing. --- ## Patch 5: Performance hook machine - Build a strong 8-stage motif - Use Loopy for live fragment looping - Assign CTRL knobs to Slide Amount and Root - Use AUX input for Skip Invert or Play Order Result: You can “perform” melody rather than merely start playback. --- # Best melodic strengths of Metropolix ## Especially strong for: - basslines - acid sequences - modal melodies - counterpoint from one source - evolving repeating motifs - arpeggio-like melodic figures - harmonically constrained generative phrases - live melodic improvisation ## Less about: - piano-roll style step entry - explicit polyphonic chord sequencing from separate outputs alone It excels at **musical variation from compact material**. --- # Summary The **Intellijel Metropolix** can be used to create melodic components by combining: - **pitch sliders** for note contour - **scales/root** for tonal control - **2 tracks** for harmony/counterpoint - **pulse counts and gate types** for phrasing - **slide, ratchets, probability, and skip** for expression and variation - **accumulation** for evolving melodic transposition - **CV lanes** for note-by-note articulation - **MOD lanes** for self-modulating melodic change - **Loopy** for live performance manipulation - **presets and chains** for melodic arrangement over time In practice, Metropolix is best understood not as a simple step sequencer, but as a **melodic performance and composition engine** for Eurorack. --- [Generated With Eurorack Processor](https://github.com/nstarke/eurorack-processor)