Thanks for your message!
I’m sorry to hear that you didn’t find any open score in your experience using the OML.
So far, we’ve indexed about 200,000 scores, and over 150,000 of them (75%) are openly accessible via the OML. Here’s an example of a score (Beethoven’s Symphony No. 5) available at the National Library of France, and here’s another one (Copland’s Sonata for clarinet and piano) from the Library of Congress.
You can restrict your search in the OML to open resources only by using this toggle:
And, if you’re looking for open scores by a specific composer, you can also go to that composer page and look for the OA indicator that appears on the left-hand side. It’ll tell you what proportion of his/her scores are actually openly available in the OML. In the case of Mozart, 544 scores are open! See below:
Let me know if you have any other question or comment while using the site.
Very best wishes,