Music Composition Skills — Development skill for Claude Code

music-composition-skills

English · [中文版](README_ZH.md) · [日本語](README_JA.md) · [한국어](README_KO.md)

29 agent skills (for [Claude Code](https://docs.anthropic.com/en/docs/claude-code/skills) and [OpenAI Codex](https://developers.openai.com/codex/)) for composing and arranging popular music, distilled from 50 books on orchestration, harmony, form, counterpoint, mixing and style practice, plus 62 arrangements measured from multitrack recordings.

The `SKILL.md` files follow the open [agentskills.io](https://agentskills.io) standard and are shared by both agents: install once and it works in both.

**The output is a spec sheet, not advice.** Ask for a song and the agent fills in an ARR-SPEC — key, tempo, bar-accurate section map, chord letters and roman numerals, who enters and leaves when, the energy curve, vocal delivery, mix intent — and then compiles that one document into a Suno prompt, an ABC score for YuE2, or MIDI. The same document is what you check the result against. That is the whole design: **one artifact, four uses** — handoff, controlled A/B, compile source, acceptance baseline.

**Ask in your own language.** The skill bodies are written in Chinese, because most of the sources are Chinese originals or Chinese translations. The agent answers in whatever language you ask in.

**These skills do not make the generation model faster; they trade time for quality.** A full pass through a professional music workflow often takes twenty minutes or more for a single song (the agent reads the criteria, fills in the spec, runs the checklists). What you get in return is a professional-grade spec, not a few lines of prompt.

**This library ships no musical works at all, neither the author's own nor any other artist's, no arrangements and no lyrics.** Whether a piece of music is good is a subjective call. Use it yourself and judge for yourself what it is worth, and what it costs you in time.

The four libraries in this series

One audio line, cut into four independ