Harmonic Mixing

Find a song's BPM, musical key and Camelot code, and build beatmatched or harmonically compatible playlists and DJ sets. Use when the user asks how fast a track is, what key it is in, whether two songs mix together, what to play next after a given track, or asks for a set list, a transition, or tracks that sound similar to something. Also covers energy, danceability and valence for playlist curation.

Images, Video & Audio

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add songfinder-dev/songfinder-skills --skill harmonic-mixing

Manual install

git clone --depth 1 https://github.com/songfinder-dev/songfinder-skills.git /tmp/songfinder-skills
mkdir -p ~/.claude/skills
cp -r /tmp/songfinder-skills/skills/harmonic-mixing ~/.claude/skills/harmonic-mixing

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Harmonic mixing and track analysis

Tempo, key and compatibility data from [Song Finder](https://songfinder.dev), a free online **song finder** and audio toolkit. No API key, no account, no header needed for any endpoint here.

## Everything is keyed by ISRC

Get one first:

```bash
curl -s "https://songfinder.dev/api/track/search?q=strobe+deadmau5"
```

Take `data[0].isrc` when the title matches; otherwise show the candidates and ask which one. If the user only has a link or a file, use the `identify-song` skill first.

## Tempo, key and audio features

```bash
curl -s "https://songfinder.dev/api/track/detail?isrc=USUS10800096"
```

```json
{ "track": { "title": "...", "artist": "...", "releaseYear": 2008 },
  "features": {
    "tempo": 127.981,
    "key": { "name": "B Minor", "camelot": "10A", "openKey": "1m",
             "compatible": ["10B", "9A", "11A"] },
    "energy": 0.62, "danceability": 0.55, "valence": 0.21,
    "acousticness": 0.02, "loudness": -9.4 },
  "tempoCrossCheck": 128.0,
  "genre": { "primary": "...", "styles": ["..."] } }
```

**Round the tempo when you report it.** `127.981` is a measurement; the user wants "128 BPM".

**`energy`, `danceability`, `valence`, `acousticness`, `instrumentalness`, `liveness` and `speechiness` are 0–1.** Report them as percentages. `valence` is musical positivity, not loudness — a 20% valence track sounds melancholy regardless of how hard it hits.

### Always check `tempoCrossCheck`

Read the full skill on GitHub

Details

Skill name: harmonic-mixing
Repository: songfinder-dev/songfinder-skills
Path: skills/harmonic-mixing/SKILL.md
License: MIT
Repo updated: 15 August 2026
Listed in: karanb192/awesome-claude-skills

FAQ

What does the Harmonic Mixing skill do?

How do I install the Harmonic Mixing skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add songfinder-dev/songfinder-skills --skill harmonic-mixing. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

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