OpenDiapason presents resources for Catholic liturgy. All are available free of charge, may be reproduced without restriction and are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. The music is written with small parish choirs in mind, where resources may be limited.
As at Summer 2019 content is still in the process of being prepared to upload to the website. Please check back soon for new additions. 🙂