Terms of Service

These Terms apply to all use of the Site, including browsing, using tools, and reading articles. Any separate guidelines the operator may publish also form part of these Terms.

The Site provides interactive tools and articles for learning music theory. Services are provided free of charge, and the operator may change, add, or suspend services at any time without prior notice.

Users must not engage in the following:

- Reproducing, republishing, or redistributing Site content without permission (beyond personal study or fair use/citation)

- Placing excessive load on the Site's servers or network, scraping, or unauthorized access

- Interfering with the operation of the Site, or any activity that violates laws or public order

- Using Site content as training data for AI without permission

All content on the Site (text, images, audio, source code, tools) is owned by the operator or its rightful owners.

To use content beyond the scope of fair citation, please contact the operator in advance.

The operator strives for accuracy, completeness, and usefulness of the information on the Site but makes no guarantees of any kind.

The operator is not liable for any damages arising from use of, or inability to use, the Site.

Audio produced by tools on the Site may affect hearing depending on volume and device settings. Use at your own risk.

The Site uses external services such as Google Analytics and may link to external sites. Please review each service's terms and policies for how they handle your information.

The Site may use third-party ad services such as Google AdSense in the future. See the Privacy Policy for details on advertising.

The operator may change these Terms at any time without prior notice when deemed necessary. Changes take effect upon posting on this page.

These Terms are governed by the laws of Japan. Disputes relating to the Site are subject to the exclusive jurisdiction of the court with jurisdiction over the operator's location as the court of first instance.