Scores may be cataloged in multiple formats.
As a Book.
As a Reference Book.
As a Miniature Score.
Scores are also available in CD-ROM and in the Library Music Source database.
There are also many websites containing free scores and sheet music.
Musical Scores are cataloged in the M's according to the Library of Congress Classification System.
M – Scores
ML – Literature on music
MT – Musical Instruction and Study
To find a score in the Library Catalog, search for the composer or composition, and then limit your search to Score.
Beware spelling errors and variants in spelling, especially in foreign languages. Use...
Note: The more you type, the more likely you are to encounter either a spelling error or a variant in spelling.
Be aware of possible multiple spellings, especially when dealing with foreign languages. Example: For some online searches, “Barber of Seville” would not find “Il Barbiere di Siviglia" - and vice versus.
If unsure of spelling, you can use Google as a kind of spell check to find the most commonly used variant.
A simple way to avoid spelling uncertainties is to search for the composer, then browse the results.