Project Gutenberg is a public domain of free ebooks and music available for download. You can choose various ways of downloading. The books and music are free because the copyright has expired. There is a search book catalog available for easy search.
Ebooks: http://www.gutenberg.org/
Music: http://www.gutenberg.org/wiki/Music_(Bookshelf)
Sheet Music: http://www.gutenberg.org/wiki/Gutenberg:The_Sheet_Music_Project
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