Arrangement Coach

An Ableton Live Extension that helps electronic music producers transform loops into full arrangements. If you've ever gotten stuck with an 8-bar loop that sounds great but you can't figure out how to build a complete track around it — this is for you.

Arrangement Coach analyzes your Live Set in real time, scores each section's energy level, detects structural problems, recommends transitions, and gives you genre-aware suggestions tailored to your style.

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Quick Install

1. Download the arrangement-coach.ablx file
2. In Ableton Live, go to Options → Settings → Extensions
3. Drag and drop the .ablx file into the Extensions settings
4. The extension appears in the context menu when you right-click in Arrangement View

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How to Use

1. Set Up Section Markers

Arrangement Coach uses Locators (Ableton's arrangement markers) to define sections. Place locators at the start of each section in your arrangement — Intro, Verse, Build, Drop, Breakdown, Outro, etc.

If you don't have locators yet, click Generate Sections in the toolbar to auto-generate genre-appropriate section markers based on either a random structural template (for empty timelines) or content analysis of your existing clips.

2. Select Your Genre

Click the genre button in the toolbar to open the genre picker. With 15+ genre families and 120+ subgenres, you can drill down to your exact style. The selected genre adjusts:

• How energy scores are weighted
• What counts as an "issue" (a 64-bar intro is fine for Trance, but too long for Trap)
• Transition recommendations
• Checklist items and suggestions

3. Load Your .als File

For full analysis including automation detection (filter sweeps, volume curves, send levels), you need to point the extension at your saved .als file.

1. Save your Live Set (Ctrl+S / Cmd+S) so automation is written to the file
2. Click the 🔍 button in the toolbar (it pulses red when not loaded)
3. Click Browse… and select your .als file
4. Click Submit — automation data is parsed and the analysis runs

You only need to do this once per session. If you add or change automation later, save and re-analyze.

4. Analyze

Click the Analyze button to run the full analysis pipeline. Always save your Live Set first — the extension reads the file on disk, so unsaved changes won't be reflected.

5. Work Through Suggestions

Click section pills across the top to navigate between sections. The three panels (Suggestions, Transitions, Notes) update to show context for the active section. Use the auto-generated checklist as a to-do list while arranging.

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How the Analysis Works

The analysis pipeline runs in several stages, each feeding into the next:

Stage 1: Data Extraction

The extension reads your Live Set via the Ableton Extensions SDK:

• Locators → section boundaries (name, position, duration)
• Tracks → classified by name and device chain into frequency buckets (sub, bass, low-mid, mid, high-mid, high, full)
• MIDI clips → note density, velocity, polyphony, pitch range, articulation patterns
• Audio clips → spectral analysis (FFT), RMS energy, transient detection, role classification
• Automation → parsed from the .als file (filter, volume, send, pan envelopes)
• Devices → instrument/effect chain analysis for track role classification

Stage 2: Energy Scoring

Each section receives an energy score from 1–10 based on a weighted combination of factors:

Factor	What it measures
Active track count	How many tracks have content in this section
MIDI density	Notes per bar across all MIDI tracks
Track presence ratio	Fraction of total tracks active
Automation ratio	Fraction of tracks with automation envelopes
Frequency coverage	How many of the 7 frequency buckets are occupied
Velocity intensity	Average MIDI velocity (loudness/intensity)
Polyphony score	Average simultaneous notes per beat
Pitch range	Melodic spread across active tracks
Audio energy	Normalized RMS from audio track spectral analysis
Synth energy	Contribution from lead/pad/chord/arp synth analysis
Drum energy	Normalized drum element richness (active kick, snare, hi-hat, cymbal, percussion elements)

Genre-adjusted weights — Different genres emphasize different factors. Techno weights automation and frequency coverage heavily; Hip-Hop weights velocity and MIDI density; Ambient prioritizes pitch range and frequency coverage over track count. Genres with prominent percussion (Techno, D&B, Footwork) also weight drum element richness — sections with a full kit (kick, snare, hi-hat, cymbal, percussion) score higher than sections with just a kick.

Relative scoring — Scores are normalized across your arrangement. The section with the most activity gets a higher score, the least gets a lower score. This means scores represent contrast within your track, not an absolute standard.

Color coding:

• 🟢 Green (1–3): Low energy — intros, breakdowns, ambient passages
• 🟡 Yellow (4–6): Medium energy — verses, builds, transitions
• 🟠 Orange (7–8): High energy — choruses, drops, peak sections
• 🔴 Red (9–10): Maximum energy — climactic moments

Stage 3: Issue Detection

The extension scans for structural problems:

Issue type	What it detects
Flat energy	Consecutive sections with very similar energy (arrangement feels static)
Missing transition	Large energy jump between sections without transition elements (risers, fills, sweeps)
Repetition	Consecutive sections with high structural similarity (same tracks, same density, same automation state)
Abrupt change	Large energy jumps without genre-appropriate context (no buildup, breakdown, or drop boundary)
Frequency crowding	Too many tracks competing in the same frequency bucket
DJ compatibility	Intro/outro length, phrase alignment, and mix-zone suitability based on genre expectations
Synth repetition	Same synth patterns repeating across multiple sections without variation
Low synth density	Synth tracks with very sparse content in a section
Harmonic shift	Large harmonic interval jumps without transitional context
Duplicated roles	Multiple tracks serving the same instrument role in the same section

Each issue has a severity level (info, warning, error) and thresholds adjust based on your selected genre.

Stage 4: Transition Recommendations

For each section boundary, the engine recommends transition techniques based on:

• Energy delta — how much the energy changes between sections
• Boundary type — whether it's entering a drop, leaving a breakdown, building up, etc.
• Genre conventions — what types of transitions are idiomatic for your style
• Spectral contrast — how different the audio content is across the boundary

Each recommendation includes:

• Specific techniques (e.g., "16-bar high-pass filter sweep", "2-bar drum fill with snare roll")
• A rationale explaining why this transition type suits the boundary
• A checklist of actionable steps to implement it

Stage 5: Content-Aware Suggestions

Deep analysis of MIDI and audio content generates targeted suggestions:

• Pattern fingerprinting — identifies repeated patterns and suggests where to introduce variation
• Fill/build detection — recognizes existing fills and avoids redundant suggestions
• Instrument role classification — understands which tracks are kicks, basses, leads, pads, etc.
• Percussion-specific — genre-aware drum suggestions (e.g., "add an open hi-hat pattern in the build")
• Synth variation — velocity automation, layering, pitch transposition, and articulation ideas
• Audio frequency balance — sub-bass presence, spectral density, and frequency distribution
• Automation opportunities — where filter sweeps, volume rides, or send automation would add movement

Stage 6: Reference Comparison (Optional)

Drop a reference track into your Live Set (name it starting with "REF" or "Reference") and the extension will:

• Detect it automatically
• Extract its section structure from clip boundaries
• Compare your arrangement's proportions against the reference
• Show delta indicators for section lengths and timing

Arrangement Score

The Arrangement Score (1–10) in the controls bar gives you an at-a-glance measure of how well your energy curve matches the ideal for your selected genre. It combines two components at 50/50 weighting:

• Shape similarity — Are your energy rises and falls happening at the right moments? (cosine similarity of delta vectors)
• Absolute proximity — Are your actual energy levels close to what the genre expects? (average deviation from template)

Score tiers:

• 🟢 8–10 Good — Your arrangement closely follows the genre's energy arc
• 🟡 5–7 Acceptable — Some deviation, but the overall shape works
• 🔴 1–4 Needs Work — Significant mismatch with the genre's expected dynamics

The score updates automatically when you analyze or change genres. If your arrangement has fewer sections than the genre template, only the corresponding prefix is compared. If it has more sections, the template is interpolated to match.

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What an Ideal Arrangement Looks Like in the UI

A well-structured arrangement displays:

1. Varied energy bars — A wave pattern with clear peaks and valleys. Not all the same height.
2. No red issues — Zero error-severity issues. A few info/warning items are normal.
3. Green transition indicators — Each section boundary has an appropriate transition with a completed checklist.
4. Genre alignment — The structural proportions match your genre's conventions (e.g., 32-bar intro for DJ-oriented tracks, 4-bar intro for pop).
5. Good DJ score — If making club music, the DJ compatibility scoring shows phrase-aligned intros/outros of appropriate length.

A "problem" arrangement typically shows flat energy bars (all similar height), multiple repetition warnings, and missing transition alerts between major sections.

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The Three Panels

Suggestions (Left)

Arrangement-wide feedback that applies regardless of which section is selected:

• Structural warnings (flat energy, repetition)
• Automation opportunities
• Genre-specific recommendations
• Frequency balance observations
• Synth and percussion suggestions

Each suggestion is color-coded by severity and includes an actionable recommendation — not just "this is wrong" but "here's what to do about it."

Transitions (Center)

Filtered to the active section. Shows:

• Recommended transition type for entering this section
• Specific techniques with bar durations
• Rationale explaining why this approach fits
• Per-transition checklist items you can tick off as you implement them

Notes (Right)

Your workspace for each section:

• User notes — free-text notes you add manually (persisted per project)
• Auto-generated checklist — action items derived from detected issues and suggestions, toggleable as complete
• Notes persist across sessions, keyed to your Live Set file path

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Supported Genres

15 genre families with 120+ subgenres:

• Techno — Peak Time, Hard, Industrial, Minimal, Acid, Dub, Detroit, Hypnotic, Raw, Schranz, Ghettotech, Hardgroove, Birmingham
• House — Deep, Tech, Progressive, Funky, Afro, Jackin, Soulful, UK Garage, Electro, Bass, Chicago, Ghetto, UK Funky, Gqom, French Touch, Lo-Fi, Future Garage
• Melodic Techno & Progressive — Melodic Techno, Progressive House, Organic House, Afro House, Indie Dance
• Trance — Uplifting, Psytrance, Goa, Progressive, Tech, Vocal, Dark Psy, Forest
• Drum & Bass — Liquid, Neurofunk, Jump-Up, Jungle, Classic Jungle, Halftime, Darkside, Minimal, Rollers, Dancefloor, Crossbreed, Atmospheric/Intelligent
• Dubstep & Bass — Riddim, Melodic Dubstep, Brostep, Tearout, UK Bass, Future Bass, Colour Bass, Wave
• Hip-Hop & Trap — Boom Bap, Trap, Lo-Fi, Phonk, Drill, Cloud Rap, Memphis, Rage, Plugg
• Pop/Electronic — Synthpop, Electropop, Future Pop, Hyperpop, Dance Pop, K-Pop
• Ambient & Downtempo — Ambient, Chillout, Trip-Hop, Downtempo, IDM, Dub, Lo-Fi House, Film Score
• Synthwave & Darkwave — Synthwave, Retrowave, Outrun, Darkwave, Darksynth, Coldwave, Post-Punk, EBM, Witch House
• Hardcore & Bouncy — Gabber, Frenchcore, Donk, Breakcore, Hardstyle (Euphoric + Raw), Speedcore
• Footwork & Juke — Chicago Footwork, Juke, Teklife-style
• IDM & Experimental — IDM, Glitch, Bubblegum Bass / Hyperpop Roots
• Electro & Breakbeat — Classic Detroit Electro, Nu-Skool Breakbeat, Electro-Funk
• African & Latin Electronic — Amapiano, Afro Tech, Baile Funk

Special parser modes for non-standard genres (IDM, Glitch, Breakcore, Speedcore) disable phrase-based detection to avoid false-positive issues.

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Keyboard Shortcuts

Key	Action
← / →	Navigate between sections
Enter	Quick-add note

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Requirements

• Ableton Live with Extensions support
• Windows or macOS

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Changelog

See docs/CHANGELOG.md for a detailed list of changes per version.

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Credits

Built by TH3RDWAVE.com