Is the Music Composition skill free?

Yes. The skill itself is free from SJY051/music-composition. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Music Composition SkillProof Score?

9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 5/5.

How do I install Music Composition?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Music Composition with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Music Composition

Chord-by-chord songwriting and theory coach across 20+ genres, from K-pop to jazz.

by SJY051 · SJY051/music-composition

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 9.2/10
Tested: Jul 14, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 5b9dfc0

Given a repetitive i-♭VI-♭III-♭VII loop in a sad piano bridge, the skill's reharmonization reference correctly diagnosed the missing dominant pull and produced a named G7♭9 substitution with a voice-leading rationale, clearly more surgical than a baseline 'try a secondary dominant' answer.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 8/10
Docs & honesty 5/5

What Music Composition does

Translates vague creative problems ("the chorus feels weak") into concrete compositional moves — chord progressions, voicings, reharm techniques, arrangement fixes — grounded in genre-specific convention across classical, jazz, pop, K-pop, Afrobeats, and more. Triggers on music theory, songwriting, harmony, and orchestration questions; explicitly excludes DAW automation, MIDI generation, and mixing/mastering.

How to install Music Composition

git clone https://github.com/SJY051/music-composition
cd music-composition
mkdir -p ~/.claude/skills
cp -r . ~/.claude/skills/music-composition

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Music Composition

/music-composition Chord-by-chord songwriting and theory coach across 20+ genres, from K-pop to jazz.

It also activates on plain-language prompts like these:

This chorus feels weak, how can I make it hit harder?
Suggest a chord progression for a melancholy K-pop bridge.
Give me some reharmonization ideas for this jazz turnaround.

Frequently asked questions

Is the Music Composition skill free?: Yes. The skill itself is free from SJY051/music-composition. SkillProof publishes the install command and an independent test verdict at no cost.
Does Music Composition work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Tested · Works. Given a repetitive i-♭VI-♭III-♭VII loop in a sad piano bridge, the skill's reharmonization reference correctly diagnosed the missing dominant pull and produced a named G7♭9 substitution with a voice-leading rationale, clearly more surgical than a baseline 'try a secondary dominant' answer.
What is the Music Composition SkillProof Score?: 9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 5/5.
How do I install Music Composition?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Music Composition with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.