Here is a record from the catalog:

- Notice the location – the “Garden Level” (a.k.a., basement) has a CALL NUMBER that begins with the letter ‘M’, which is the Library of Congress area for music.
If you open the record in the catalog you can see more detail:

- Notice in particular the AUTHOR and SUBJECT, as well as unusual things like “Uniform Title”.
- It's worth paying attention when the Contents, Summary and Notes tell you what is included…or excluded (All compositions EXCEPT the sonatas, variations and dances”).