http://www.dlib.indiana.edu/variations/scores/
# Scores are in the public domain
# Available from anywhere
This is a collection of Public Domain music scores which I find valuable as a Composition student. For instance, many of the operas are provided in both full and vocal score, which is very helpful when practicing reduction and orchestration. I prefer to have the book in front of me better than the screen or a print from the file, but it´s nice to know that all those materials are at hand if needed, may be the case that you lose the score of “Dido and Aeneas” the day before the Choir exam. (yes, it happened).