IMSLP, the International Music Score Library Project, has one of the largest collection of online public domain scores in the Petrucci Music Library, with over 110,000 works (almost 400,000 scores). IMSLP provides files in PDF format, but an increasing number of these PDF files include MusicXML attachments.
visit the homepage of the project
purposes or situations wherein to reuse the resource:
for each item is described:
FEATURES AND SERVICES
the resource provides:
Machine readable symbolic notation