Music Composer | Skills Pool
Music Composer Expert in music composition across all genres, MIDI programming, audio synthesis, music theory, and arrangement. Use when composing music, creating MIDI files, generating melodies/harmonies/rhythms, arranging tracks, or working with musical concepts like scales, chords, progressions, and orchestration.
PaoloQuaranta 1 stars Oct 28, 2025 Occupation Categories Arts & Crafts Comprehensive music composition assistant with expertise in theory, MIDI programming, synthesis, and all musical genres from classical to electronic.
Core Capabilities
1. Music Composition & Arrangement
Generate melodies, harmonies, bass lines, and rhythmic patterns
Create full arrangements with multiple instruments
Orchestrate for various ensembles (orchestra, band, electronic, etc.)
Develop chord progressions and harmonic structures
Write counterpoint and polyphonic textures
2. MIDI Programming
Create MIDI files programmatically using Python (mido library)
Generate drum patterns, arpeggios, and sequences
Implement realistic velocity curves and humanization
Use scripts in scripts/ for common MIDI tasks
Export production-ready MIDI files
3. Genre Expertise
All genres supported - consult references/genres.md for specific characteristics:
Quick Install
Music Composer npx skills add PaoloQuaranta/Webarmonium
stars 1
Updated Oct 28, 2025
Occupation
Classical (Baroque, Romantic, Contemporary)
Jazz (Bebop, Modal, Fusion, Smooth)
Electronic (Techno, House, Ambient, IDM, Dubstep)
Rock & Metal (Progressive, Blues, Punk)
Pop & R&B (Contemporary, Soul)
World Music (Latin, African, Asian traditions)
Film/Game Scoring
4. Music Theory & Analysis Comprehensive theory support - see references/theory.md:
Scales (Major, Minor, Modal, Exotic)
Chord construction and voicings
Harmonic progressions and functions
Form and structure analysis
Rhythmic concepts and time signatures
5. Audio Synthesis Guidance Provide synthesis programming advice for:
Subtractive synthesis (oscillators, filters, envelopes)
FM synthesis (operators, algorithms)
Wavetable and granular synthesis
Effects chains and processing
Quick Start Workflows
Compose a Melody # Use the melody generator script
python scripts/generate_melody.py --key C --scale major --length 16 --output melody.mid
Create a Chord Progression # Generate progression with voice leading
python scripts/generate_chords.py --progression "I-IV-V-I" --key G --output chords.mid
Build a Drum Pattern # Create rhythmic pattern
python scripts/generate_drums.py --style "rock" --tempo 120 --bars 4 --output drums.mid
Full Arrangement Combine elements into complete composition:
Define structure (intro, verse, chorus, etc.)
Create chord progression for each section
Generate melody over chords
Add bass line following harmony
Program drums and percussion
Add additional instruments/textures
Export multi-track MIDI
Working with Musical Requests
"Compose a jazz ballad in Bb"
Choose jazz ballad chord progression (consult references/progressions.md)
Set tempo (60-80 BPM typically)
Create walking bass line
Add jazz piano voicings
Compose melody with jazz phrasing
Add subtle drums (brush pattern)
Export MIDI with proper track names
"Create a techno track with a driving bassline"
Set tempo (125-135 BPM)
Create 4-on-the-floor kick pattern
Generate repetitive bassline (often single note or octaves)
Add hi-hats and percussion
Create synth leads/stabs
Layer atmospheric pads
Structure: Intro → Build → Drop → Break → Drop → Outro
"Write a string quartet movement"
Choose form (Sonata, Rondo, Theme & Variations)
Compose main themes
Distribute among instruments (Violin I, Violin II, Viola, Cello)
Develop counterpoint and voice leading
Consider range and playability
Export with separate tracks for each instrument
MIDI Technical Details
General MIDI (GM) Program Numbers Consult references/gm_instruments.md for complete list:
0: Acoustic Grand Piano
24: Acoustic Guitar (nylon)
32: Acoustic Bass
40: Violin
128+: Drum kits (channel 10)
MIDI Note Numbers Middle C = 60 (C4)
Range: 0-127 (C-1 to G9)
Velocity Guidelines
ppp: 8-20
pp: 21-35
p: 36-50
mp: 51-65
mf: 66-80
f: 81-95
ff: 96-110
fff: 111-127
Humanization Techniques
Slight velocity variation (±5-10)
Micro-timing adjustments (±10-30 ticks)
Avoid perfectly quantized notes
Vary note lengths slightly
Music Theory Quick Reference
Common Chord Progressions
Pop: I-V-vi-IV (C-G-Am-F)
Blues: I-I-I-I-IV-IV-I-I-V-IV-I-I
Jazz: ii-V-I (Dm7-G7-Cmaj7)
Rock: I-bVII-IV (C-Bb-F)
See references/progressions.md for comprehensive list.
Major: W-W-H-W-W-W-H
Natural Minor: W-H-W-W-H-W-W
Harmonic Minor: W-H-W-W-H-W+H-H
Pentatonic Major: W-W-m3-W-m3
See references/scales.md for all modes and exotic scales.
Best Practices
Composition
Start with a clear concept or emotion
Consider the target context (film, game, standalone)
Use repetition with variation
Balance complexity and accessibility
Think in terms of call-and-response
MIDI Production
Use appropriate velocity ranges for realism
Pan instruments for spatial clarity
Layer sounds for richness
Leave headroom for mixing
Include tempo and time signature changes when needed
Arrangement
Don't overcrowd the frequency spectrum
Create contrast between sections
Use dynamics effectively
Consider the listener's attention span
Build and release tension
Resources Overview
Scripts (scripts/)
generate_melody.py - Melodic line generatorgenerate_chords.py - Chord progression creatorgenerate_drums.py - Rhythm pattern generatormidi_utils.py - Shared MIDI utilities
References (references/)
theory.md - Complete music theory referencegenres.md - Genre characteristics and conventionsscales.md - All scale types and formulasprogressions.md - Common chord progressions by genregm_instruments.md - General MIDI instrument listorchestration.md - Instrument ranges and combinations
Assets (assets/)
templates/ - MIDI templates for common setupsdrum_patterns/ - Pre-made drum MIDI files
Resources This skill includes example resource directories that demonstrate how to organize different types of bundled resources:
scripts/ Executable code (Python/Bash/etc.) that can be run directly to perform specific operations.
Examples from other skills:
PDF skill: fill_fillable_fields.py, extract_form_field_info.py - utilities for PDF manipulation
DOCX skill: document.py, utilities.py - Python modules for document processing
Appropriate for: Python scripts, shell scripts, or any executable code that performs automation, data processing, or specific operations.
Note: Scripts may be executed without loading into context, but can still be read by Claude for patching or environment adjustments.
references/ Documentation and reference material intended to be loaded into context to inform Claude's process and thinking.
Examples from other skills:
Product management: communication.md, context_building.md - detailed workflow guides
BigQuery: API reference documentation and query examples
Finance: Schema documentation, company policies
Appropriate for: In-depth documentation, API references, database schemas, comprehensive guides, or any detailed information that Claude should reference while working.
assets/ Files not intended to be loaded into context, but rather used within the output Claude produces.
Examples from other skills:
Brand styling: PowerPoint template files (.pptx), logo files
Frontend builder: HTML/React boilerplate project directories
Typography: Font files (.ttf, .woff2)
Appropriate for: Templates, boilerplate code, document templates, images, icons, fonts, or any files meant to be copied or used in the final output.
Any unneeded directories can be deleted. Not every skill requires all three types of resources.
02
1. Music Composition & Arrangement
Arts & Crafts
Sprites And Images Use this skill when creating Sprites or Images in Phaser 4. Covers factory methods, texture/frame selection, position, scale, rotation, tint, flip, alpha, origin, depth, and the component mixin system. Triggers on: Sprite, Image, this.add.sprite, this.add.image, texture, setTint, setAlpha.
Arts & Crafts
Graphics And Shapes Use this skill when drawing shapes and graphics in Phaser 4. Covers the Graphics game object, lines, rectangles, circles, arcs, polygons, gradients, fill, stroke, and generated textures. Triggers on: Graphics, draw shape, fillRect, lineStyle, polygon, arc.