Ableton Arrangement — composing full songs via MCP
Song-agnostic patterns for fleshing a song idea (MIDI or chart in hand) into a full
arrangement. Validated on a hardcore-punk 11/4 reinterpretation of Agni Parthene;
applies to any genre/key/meter. Connection mechanics and device gotchas live in the
ableton-mcp skill; analysis of existing recordings in song-analysis.
Track layout template
Works for rock/punk/electronic/cinematic reinterpretation:
| Track |
Role |
| Reference (muted) |
Original melody/reference audio for A/B |
| Melody / Voices |
Lead vocal or chant melody MIDI |
| Bass |
e.g. Deep Hop Bass rack, Electric Basic Bass, String Studio |
| Rhythm Guitar |
Power chords — Guitar-Dual Amped Heavy (heavy) / Crunch (medium) |
| Drums |
Kit (Memphis Studio etc.) — kick=36, snare=38, hh_closed=42, hh_open=46, crash=49, ride=51, toms=41/43/45 |
| Lead Guitar |
Same guitar rack as rhythm, Amp Gain pushed (~115/127) |
| Color/Aux |
Trumpet, strings, pads — punctuates bridges, fills holes |
One MIDI clip per track at song length (e.g. 198 beats for 18 bars of 11/4). Slot 8 is a
good "live" slot; leave slots 0–7 for variations.
Section design
At least 5 sections, each with its own character:
| Section |
Bars (typical) |
Function |
| Intro |
1–2 |
Bass + lead color only. No rhythm guitar. Anticipation. |
| Verse build |
3–4 |
Rhythm guitar enters. Bass still sparse. |
| Chorus |
5–8 |
Full instrumentation, peak energy. |
| Bridge |
9–12 |
Pull back — sparse; a NEW instrument enters (trumpet, strings). Lead silent. |
| Solo |
13–16 |
Lead foreground. Drums change pattern (ride > closed hat). |
| Outro |
17–18 |
Breath, then finale hit. |
Each instrument changes role per section — never the same density throughout. The
contrasts create the song's narrative.
Dynamic techniques (proven to add soul)
- Pre-section drops — silence drums + bass for 1 beat before each section change.
The ear reaches for the missing beat → next section HITS harder.
- Section-based volume automation via
set_clip_automation "Volume": Intro 0.65,
Build 0.85, Bridge 0.70–0.78, Solo 0.95, Outro 0.70 → 1.0.
⚠️ Only works where the track exposes Volume as automatable — bass usually does; drum
kit racks and guitar amp racks often DON'T ("Parameter not found") → fall back to
per-note velocity or a manual envelope.
- Drum ghost notes — quiet snares (vel 24–38) ~0.25–0.5 beats before each main
snare. Skip the bridge.
- Solo-specific drums — swap constant closed hats for ride on chord-change beats +
open-hat splashes at offbeats. ~50% fewer notes; breathing room.
- Pre-solo crash (pitch 49) at the solo's first beat.
- Tom fills at section boundaries — Hi → Mid → Low over 0.5–1 beat, vel ramp 80→110.
Bass pattern palette (per-bar, never uniform)
| Pattern |
Use case |
Per 4/4 bar |
Per 11/4 bar |
| DRIVE (8ths on root) |
High-energy chorus/solo |
8 |
22 |
| BREATH (half + quarter feel) |
Verse/build, space |
2–3 |
4–6 |
| SLIDE (last 2 8ths step up) |
Section transitions |
8 ending up |
22 ending up |
| STAB (sustains) |
Bridge, sparse |
2–3 |
5 |
| STAC_AIR (rests + isolated hits) |
Punk breaks |
2–4 |
4–6 |
| OCT (root/octave alternation) |
Push energy |
8 |
22 |
| ACCENT (3+3+2 grouping, vel accents) |
Solo entry |
8 |
22 |
| WALK/CLIMB (scale walk between roots) |
Transitions |
varies |
varies |
Don't DRIVE every bar — constant 8ths sound like a sequencer. Mix patterns; ~50–100
notes total per song section, not hundreds. Punk reference (Ramones-style, bars 37–40):
DRIVE → BREATH+SLIDE → STAC_AIR → ACCENT.
Drum conventions per meter
- 4/4 rock/punk: kick 1+3, snare 2+4, closed hat every 8th.
- 11/4 (3+4+4): kick 1, 4, 8 (sub-group downbeats); snare 3, 7, 11 (sub-group ends).
- 9/8 zeibekiko (4+5): kick 1, 5; snare varies by sub-style.
- General: hat velocity −22% to avoid harsh top; crash on section entries; tom fill at
the bar before transitions.
- HARD RULE — drummer-playable: patterns must be humanly performable. No sustained
32nds at moderate tempos, hands alternate, no impossible limb stacks (e.g. 3
simultaneous hand hits). If a real drummer couldn't play it, rewrite it.
- Match the source genre's drum logic when reinterpreting (see
song-analysis
references/drum-pattern-analysis.md) — don't impose a rock backbeat on laiko.
Lead guitar techniques (in order of subtlety)
- Power chord swells (root+5th+octave) on changes; strum offsets 12–80 ms.
- Chord-tone landings on strong beats; scale tones connect.
- String-pull bends — diatonic-step-below grace (~0.15 beat) before a peak.
Selective only — every-note bends sound fake.
- Re-plucks — split a sustain into long+short same-pitch pair (~0.05 beat gap).
Phrase peaks and final resolutions only.
- Chromatic approach for horns — half-step grace below each stab (D# → E).
Power-chord chart shorthand (single letters, no quality): see song-analysis
references/modal-theory.md.
Effects chains
Bass — punk grit (cuts through): Overdrive (Drive 35, Tone 60, Dry/Wet 45 —
parallel) → EQ Eight (HP 40 Hz, −2 dB @ 250, +3.5 dB @ 1k presence, +2 dB @ 1.5k growl)
→ Compressor (4:1, threshold ~−15 dB, makeup on).
Rhythm guitar — wide and warm: rack Chorus macro ~75, Room ~70 → Chorus-Ensemble
(Ensemble mode, Width 0.85, Warmth 0.65, Dry/Wet 0.35) → EQ Eight (HP 60 Hz, +2.5 dB @
200 body, −1.5 dB @ 3.5k smooth top).
Lead — distortion: rack "Amp Gain" macro 110–120 (88 = clean-ish, max 127), drop
"Amp Volume" ~10 to compensate; Chorus-Ensemble + Reverb after the amp = soaring solo.
Mastering (MANUAL — MCP can't touch Master): EQ Eight (HP 30 Hz, +1 dB @ 3k, +1.5 dB
@ 10k air) → Glue Compressor (2:1, Attack 10 ms, Release Auto, Makeup +2 dB, 1–2 dB GR)
→ Limiter (ceiling −0.3 dB, ~−12 LUFS modern / ~−9 LUFS aggressive punk).
Arrangement-specific MCP cautions
(Full gotcha list → ableton-mcp skill.)
- Drum clips with 500+ notes exceed read token limits — work from locally-saved JSON.
- Read the clip before wiping. The user hand-edits clips mid-session ("made a few
changes") — filter + re-push over wipe + full push;
remove_notes by range.
- Volume automation rejected on rack tracks → per-note velocity.
- UI says "track 11" → MCP index 10.
Iteration patterns that worked
- Save every meaningful state to JSON — easy revert, diff history.
- Push in 2–3 chunks, not 6–9.
- Filter + add over wipe + push for small changes.
- Re-read the clip when the user says "made changes" — never trust last-saved state.
- Get direction before big rewrites (AskUserQuestion when the request is ambiguous).
- Test small first — one section, then propagate.
When NOT to use this workflow
- Live recording sessions — manual playing beats MCP for tracking.
- One-note tweaks — Ableton UI directly.
- Auditioning samples — browser preview is faster.
- Final mastering — needs manual ears and tools beyond MCP.
Local environment (this machine)
- Note generators live in
/Users/peripan/dev/abletonAI/audio-analysis/ (gen_*.py,
build_*.py) — bass palettes, drum fills, lead techniques implemented there.
- Source doc (read-only):
WORKFLOW-ableton-arrangement.md in the same folder.
1---2name: ableton-arrangement3description: Use when composing or arranging a full song in Ableton Live via MCP — section design, track layout, bass pattern palettes (DRIVE/BREATH/SLIDE…), drum conventions per meter, lead guitar techniques, effects chains, dynamics and humanization. For reinterpreting songs in a new genre or building an arrangement from a chart or MIDI.4---56# Ableton Arrangement — composing full songs via MCP78Song-agnostic patterns for fleshing a song idea (MIDI or chart in hand) into a full9arrangement. Validated on a hardcore-punk 11/4 reinterpretation of Agni Parthene;10applies to any genre/key/meter. Connection mechanics and device gotchas live in the11`ableton-mcp` skill; analysis of existing recordings in `song-analysis`.1213## Track layout template1415Works for rock/punk/electronic/cinematic reinterpretation:1617| Track | Role |18|---|---|19| **Reference (muted)** | Original melody/reference audio for A/B |20| **Melody / Voices** | Lead vocal or chant melody MIDI |21| **Bass** | e.g. `Deep Hop Bass` rack, `Electric Basic Bass`, `String Studio` |22| **Rhythm Guitar** | Power chords — `Guitar-Dual Amped Heavy` (heavy) / `Crunch` (medium) |23| **Drums** | Kit (Memphis Studio etc.) — kick=36, snare=38, hh_closed=42, hh_open=46, crash=49, ride=51, toms=41/43/45 |24| **Lead Guitar** | Same guitar rack as rhythm, Amp Gain pushed (~115/127) |25| **Color/Aux** | Trumpet, strings, pads — punctuates bridges, fills holes |2627One MIDI clip per track at song length (e.g. 198 beats for 18 bars of 11/4). Slot 8 is a28good "live" slot; leave slots 0–7 for variations.2930## Section design3132At least 5 sections, each with its own character:3334| Section | Bars (typical) | Function |35|---|---|---|36| Intro | 1–2 | Bass + lead color only. No rhythm guitar. Anticipation. |37| Verse build | 3–4 | Rhythm guitar enters. Bass still sparse. |38| Chorus | 5–8 | Full instrumentation, peak energy. |39| Bridge | 9–12 | Pull back — sparse; a NEW instrument enters (trumpet, strings). Lead silent. |40| Solo | 13–16 | Lead foreground. Drums change pattern (ride > closed hat). |41| Outro | 17–18 | Breath, then finale hit. |4243Each instrument changes role per section — never the same density throughout. The44contrasts create the song's narrative.4546## Dynamic techniques (proven to add soul)47481. **Pre-section drops** — silence drums + bass for 1 beat before each section change.49 The ear reaches for the missing beat → next section HITS harder.502. **Section-based volume automation** via `set_clip_automation` "Volume": Intro 0.65,51 Build 0.85, Bridge 0.70–0.78, Solo 0.95, Outro 0.70 → 1.0.52 ⚠️ Only works where the track exposes Volume as automatable — bass usually does; drum53 kit racks and guitar amp racks often DON'T ("Parameter not found") → fall back to54 per-note velocity or a manual envelope.553. **Drum ghost notes** — quiet snares (vel 24–38) ~0.25–0.5 beats before each main56 snare. Skip the bridge.574. **Solo-specific drums** — swap constant closed hats for ride on chord-change beats +58 open-hat splashes at offbeats. ~50% fewer notes; breathing room.595. **Pre-solo crash** (pitch 49) at the solo's first beat.606. **Tom fills at section boundaries** — Hi → Mid → Low over 0.5–1 beat, vel ramp 80→110.6162## Bass pattern palette (per-bar, never uniform)6364| Pattern | Use case | Per 4/4 bar | Per 11/4 bar |65|---|---|---|---|66| **DRIVE** (8ths on root) | High-energy chorus/solo | 8 | 22 |67| **BREATH** (half + quarter feel) | Verse/build, space | 2–3 | 4–6 |68| **SLIDE** (last 2 8ths step up) | Section transitions | 8 ending up | 22 ending up |69| **STAB** (sustains) | Bridge, sparse | 2–3 | 5 |70| **STAC_AIR** (rests + isolated hits) | Punk breaks | 2–4 | 4–6 |71| **OCT** (root/octave alternation) | Push energy | 8 | 22 |72| **ACCENT** (3+3+2 grouping, vel accents) | Solo entry | 8 | 22 |73| **WALK/CLIMB** (scale walk between roots) | Transitions | varies | varies |7475**Don't DRIVE every bar** — constant 8ths sound like a sequencer. Mix patterns; ~50–10076notes total per *song section*, not hundreds. Punk reference (Ramones-style, bars 37–40):77DRIVE → BREATH+SLIDE → STAC_AIR → ACCENT.7879## Drum conventions per meter8081- **4/4 rock/punk:** kick 1+3, snare 2+4, closed hat every 8th.82- **11/4 (3+4+4):** kick 1, 4, 8 (sub-group downbeats); snare 3, 7, 11 (sub-group ends).83- **9/8 zeibekiko (4+5):** kick 1, 5; snare varies by sub-style.84- General: hat velocity −22% to avoid harsh top; crash on section entries; tom fill at85 the bar before transitions.86- **HARD RULE — drummer-playable:** patterns must be humanly performable. No sustained87 32nds at moderate tempos, hands alternate, no impossible limb stacks (e.g. 388 simultaneous hand hits). If a real drummer couldn't play it, rewrite it.89- Match the source genre's drum logic when reinterpreting (see `song-analysis`90 references/drum-pattern-analysis.md) — don't impose a rock backbeat on laiko.9192## Lead guitar techniques (in order of subtlety)93941. **Power chord swells** (root+5th+octave) on changes; strum offsets 12–80 ms.952. **Chord-tone landings** on strong beats; scale tones connect.963. **String-pull bends** — diatonic-step-below grace (~0.15 beat) before a peak.97 Selective only — every-note bends sound fake.984. **Re-plucks** — split a sustain into long+short same-pitch pair (~0.05 beat gap).99 Phrase peaks and final resolutions only.1005. **Chromatic approach** for horns — half-step grace below each stab (D# → E).101102Power-chord chart shorthand (single letters, no quality): see `song-analysis`103references/modal-theory.md.104105## Effects chains106107**Bass — punk grit (cuts through):** Overdrive (Drive 35, Tone 60, Dry/Wet 45 —108parallel) → EQ Eight (HP 40 Hz, −2 dB @ 250, +3.5 dB @ 1k presence, +2 dB @ 1.5k growl)109→ Compressor (4:1, threshold ~−15 dB, makeup on).110111**Rhythm guitar — wide and warm:** rack Chorus macro ~75, Room ~70 → Chorus-Ensemble112(Ensemble mode, Width 0.85, Warmth 0.65, Dry/Wet 0.35) → EQ Eight (HP 60 Hz, +2.5 dB @113200 body, −1.5 dB @ 3.5k smooth top).114115**Lead — distortion:** rack "Amp Gain" macro 110–120 (88 = clean-ish, max 127), drop116"Amp Volume" ~10 to compensate; Chorus-Ensemble + Reverb after the amp = soaring solo.117118**Mastering (MANUAL — MCP can't touch Master):** EQ Eight (HP 30 Hz, +1 dB @ 3k, +1.5 dB119@ 10k air) → Glue Compressor (2:1, Attack 10 ms, Release Auto, Makeup +2 dB, 1–2 dB GR)120→ Limiter (ceiling −0.3 dB, ~−12 LUFS modern / ~−9 LUFS aggressive punk).121122## Arrangement-specific MCP cautions123124(Full gotcha list → `ableton-mcp` skill.)125- Drum clips with 500+ notes exceed read token limits — work from locally-saved JSON.126- **Read the clip before wiping.** The user hand-edits clips mid-session ("made a few127 changes") — filter + re-push over wipe + full push; `remove_notes` by range.128- Volume automation rejected on rack tracks → per-note velocity.129- UI says "track 11" → MCP index 10.130131## Iteration patterns that worked132133- **Save every meaningful state to JSON** — easy revert, diff history.134- **Push in 2–3 chunks**, not 6–9.135- **Filter + add over wipe + push** for small changes.136- **Re-read the clip when the user says "made changes"** — never trust last-saved state.137- **Get direction before big rewrites** (AskUserQuestion when the request is ambiguous).138- **Test small first** — one section, then propagate.139140## When NOT to use this workflow141142- Live recording sessions — manual playing beats MCP for tracking.143- One-note tweaks — Ableton UI directly.144- Auditioning samples — browser preview is faster.145- Final mastering — needs manual ears and tools beyond MCP.146147## Local environment (this machine)148149- Note generators live in `/Users/peripan/dev/abletonAI/audio-analysis/` (`gen_*.py`,150 `build_*.py`) — bass palettes, drum fills, lead techniques implemented there.151- Source doc (read-only): `WORKFLOW-ableton-arrangement.md` in the same folder.
PerIPan