Legal Notice

Last updated: 30 August 2026.

1. Website owner

Owner: Gustavo Pérez Rodríguez
Tax ID: 04622377K
Legal address: Travesía San Juan, 5, 16800 Priego, Cuenca, Spain
Email: guslokyt@gmail.com
Website: https://harmodex.guslok.com/

2. Purpose of Harmodex

Harmodex provides free music tools and information about chords, scales, intervals, notes, tunings and harmonic relationships, together with interactive diagrams and sound playback for piano, guitar, ukulele and mandolin.

3. Access and acceptable use

Access to Harmodex is generally free of charge. Users agree to use the website and its content lawfully and not to damage, overload, disable, interfere with or bypass technical measures protecting the service.

Automated mechanisms must not be used in a way that degrades the website or performs abusive extraction that affects normal availability.

4. Educational and informational purpose

Harmodex content is provided for educational, informational and reference purposes. It does not replace personalised lessons, formal education, professional advice or assessment by a teacher or specialist where such guidance is required.

Music theory may be represented using different valid conventions. Fingerings, voicings, enharmonic names, positions and performance approaches may vary by instrument, style, tradition or teaching method.

5. Sound and interactive tools

Harmodex audio may be generated synthetically in the browser to represent pitches, chords, arpeggios and scales. It is intended as an audible reference and not as a fully faithful acoustic reproduction of a specific physical instrument.

Audio compatibility and quality may vary depending on browser, device, operating system, speakers and user settings.

6. Accuracy of information

We aim to keep musical and technical information accurate. However, the website is not guaranteed to be completely free of errors, compatibility issues or differences arising from legitimate music-theory conventions.

If you identify a possible error, you can report it through the Contact page and include the affected URL.

7. Intellectual and industrial property

Original text, design, code, structure, selection, organisation, proprietary graphics and the Harmodex interface are protected by applicable law to the relevant extent.

Musical notes, intervals, chord formulas, scales and other general musical facts or relationships are not claimed as exclusive property. Instrument names, products, systems, trademarks and third-party services belong to their respective owners.

8. Third-party links and services

Harmodex may link to or use services provided by third parties. The website owner does not control their content, availability, policies or changes and is not responsible for external services outside their control.

9. Advertising and affiliate links

Harmodex may be funded through advertising, including Google AdSense, and may use affiliate links in the future where relevant. Advertising or affiliate relationships do not change the informational purpose of the tools.

Where advertising or measurement services use cookies or similar technologies, the corresponding information and consent options will be described in the Cookie Policy.

10. Liability

The owner is not liable for temporary interruptions, errors outside reasonable control, device or browser incompatibilities, or consequences arising from misuse or decisions based solely on published information, subject to any liability that cannot legally be excluded.

11. Governing law

Harmodex is governed by Spanish law and applicable European Union law.