Scores Online: Free downloads, Historical Information, etc.

•   Berlioz Music Scores (Michel Austin and Monir Tayeb).
•   Chopin Early Editions (University of Chicago)
•   The Choral Public Domain Library. Contains scores, texts, translations, and information about composers.
•   DMOZ Open Directory Project:  Downloadable Music Sheets
•   DSpace (Sibley Music Library, Eastman School of Music). Scores and books in the public domain, many unique to the Sibley Library.
•    International Music Score Library Project (IMSLP). A collaborative music score library. Over 15,000 works.
•    Kern Scores.  Standard western classical repertory, medieval to twentieth century, in a variety of genres.  Uses Humdrum **kern data format.
•    MuseData:  An Electronic Library of Classical Music Scores (Center for Computer Assisted Research in the Humanities).  As of 12/00, includes music composed between 1700 and 1825 by J.S. Bach, Beethoven, Corelli, Handel, Haydn, Mozart and Vivaldi.  Music by Marcello and Telemann are slated for inclusion.  Requires registration.
•   Mozart, Wolfgang Amadeus: Neue Mozart-Ausgabe (NMA)
•   Mutopia.  Public-domain music scores in several formats; includes some audio.
•   The Petrucci Music Library is an internet-based collaborative music score library. You will find tens of thousands of scores composed by thousands of composers here, all available for free download.
•   Rome Reborn:  The Vatican Library and Renaissance Culture:  Music--From Gregorian Chant to Opera's Origins.  An online exhibition of about thirty manuscripts, books, and documents.
•   Staff Paper in various formats.
  
  
• See also Hymns, Sheet Music Collections