Terms
Put the music in your videos. You don't need to ask.
Effective 2026-11-01
What you can do without asking
- Use a whole track in your videos and social posts, personal or business.
- Listen, read and download the scores, study them, and play them yourself, including on video.
- Use the equations however you like. They're math, and math belongs to everyone.
Credit is welcome, not required.
What automatic systems may do
The album is registered with platforms' audio matching systems, such as YouTube Content ID, through its distributor. When a video uses a track, ads may run on it and the earnings may go to the rights holder. That's automatic, and it isn't a complaint from us. YouTube may block a Short longer than one minute when it has a claim, so keep Shorts to a minute or less. On TikTok and Instagram, add tracks from the app's music library. If a video of yours has a problem, write to us with the link.
What needs a conversation first
Paid advertising, games, apps, films and anything else that builds a track into a product: write first.
What isn't allowed
- Remixing a track, sampling it, or using any sound from it in your own music.
- Uploading a track to a store, a streaming service or a music library, or presenting it as your own.
- Training AI models on the recordings or the scores.
This isn't an open, Creative Commons or royalty-free license. The original work stays with x=arcsin y, and nothing here transfers it.
What we can't promise
- This music is made with AI, and everything here is provided as it is.
- The scores are transcriptions generated from the code that plays the music. They are simplified and may contain errors or differ from what you hear.
- The site may change or go offline at any time.
Liability
To the extent the law allows, we aren't liable for damages arising from this site or from your use of what's on it. External links, such as streaming services and social platforms, are run by others under their own terms.
Changes
We may update these terms. The date above shows the latest version.
Governing law
These terms are governed by the laws of Japan.