To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
About this Add-on
You are still able to visit the subscription page to support the IMSLP project economically or explore other ways to contribute —most of them don't require money, ;)
This extension is libre software (GPLv3 licensed). You can check in GitLab the source code of the extension.