Contact
If you have found a music-theory error, an incorrect note, a playback issue, a translation that needs correction or another problem on Harmodex, you can get in touch.
You may also use this address for suggestions, privacy-related requests or questions about website content.
How to report an issue
If your message concerns a specific chord, scale or instrument, please include the entry URL and explain which part appears incorrect. For audio or interactive-diagram issues, including your browser and device can make the problem easier to reproduce.
Harmodex is a music reference tool and does not provide private lessons, support for physical instruments or personalised professional advice.