Terms of Use

Effective date: March 28, 2026

1. Acceptance

By using Irregular Pearl you agree to these terms. If you do not agree, do not use the platform.

2. What Irregular Pearl is

Irregular Pearl is a non-profit platform for classical music knowledge. We provide structured information about musical works, editions, and recordings.

3. User accounts

You may browse Irregular Pearl without an account. To rate editions, contribute content, or mark pieces you're working on, you need an account — either by signing in with Google or by creating one with an email and password. You are responsible for your account activity.

4. User content

When you post reviews, you grant Irregular Pearl a non-exclusive, royalty-free license to display that content on the platform. You retain ownership of your content. You may delete your own posts at any time.

Do not post content that infringes copyright, is abusive, or violates any law. We reserve the right to remove content that violates these terms.

5. Edition and piece data

Edition metadata (publisher, editor, year) is factual information. Descriptions are written by Irregular Pearl contributors and staff. External links point to third-party sites (IMSLP, YouTube, Wikipedia) that we do not control.

6. No warranty

Irregular Pearl is provided "as is" without warranty of any kind. We do not guarantee the accuracy of edition information, user reviews, or external links.

7. Changes

We may update these terms. Continued use after changes constitutes acceptance.

8. Contact

For questions about these terms, email info@irregularpearl.org.