# Arcalune Music

> Royalty-free BGM, sound effects, video game fan arrangements, and original vocal songs (1772 tracks). Every track is hosted on YouTube, and each one has a watch URL that starts playback exactly where that track begins in its video. Free BGM and sound effects allow commercial use without credit; 1620 tracks can also be downloaded as audio files.

動画・配信・ゲームに使えるフリーBGMと効果音、ゲーム音楽のファンアレンジ、オリジナルのボーカル曲を公開しています。全曲YouTubeで試聴でき、曲ごとの頭出しURLがあります。

## For AI agents and tools

- [MCP server](https://arcalune.com/mcp): Streamable HTTP MCP endpoint. No authentication, no session. Tools: search_tracks, get_track, list_tags.
- [MCP server card](https://arcalune.com/.well-known/mcp.json): Connection details and tool definitions, readable before connecting.
- [REST API](https://arcalune.com/api/v1/tracks): GET https://arcalune.com/api/v1/tracks, plus /{id} for one track and /tags for the tag list. Open CORS, no API key.
- [Developer guide](https://arcalune.com/developers): Parameters, response fields, and examples for both the REST API and MCP.

## Catalog

- Free BGM and original music: 454 tracks — commercial use allowed, no credit required, downloadable when a download URL is present.
- Sound effects: 1169 tracks — commercial use allowed, no credit required.
- Fan arrangements: 147 tracks — unofficial arrangements of existing game music. Streaming only; not usable as material.
- Original vocal songs: 2 tracks — original songs with lyrics and vocals, released as works. Streaming only; not usable as material.

## Usage terms

- [Usage guide](https://arcalune.com/about#usage-guide): Full terms per audio type.
- Allowed: commercial and non-commercial use in videos, streams, games, podcasts, and ads, without credit.
- Not allowed: reselling or redistributing the audio on its own, and using it as AI training data.

## Site

- [Free BGM](https://arcalune.com/bgm): Browse and filter free BGM by genre, mood, and use case.
- [Sound effects](https://arcalune.com/se): Browse free sound effects.
- [Fan arrangements](https://arcalune.com/arrangement): Browse game music fan arrangements.
- [Vocal songs](https://arcalune.com/songs): Browse original songs with vocals.
- [Popular](https://arcalune.com/popular): Ranked by plays, favorites, and downloads.
- [English site](https://arcalune.com/en): Same catalog in English.