This guide is designed to help you locate online music scores. Three major collections are provided by the Baylor University Libraries: the Music Online Classical Scores Library, the Naxos Sheet Music collection, and the Spencer Collection of American Popular Sheet Music. A few more collections, mainly historical in nature, are accessible from the A-Z Databases List.
The other services listed below are freely available online, as is the Spencer Collection.
The following are resources for online scores with various scorings. Read the descriptions to determine which ones will best meet your needs.