These print resources are a good jumping off point for your research. These can give you ideas on topics for papers or projects. Most of these are located in the reference section on the first floor of the library.
General and Subject Encyclopedias
The Garland Encyclopedia of World Music
The New Grove Dictionary of Music and Musicians
Die Musik in Geschichte und Gegenwart : allgemeine Enzyklopadie der Musik
The New Grove Dictionary of American Music
The New Grove Dictionary of Jazz
The New Grove Dictionary of Musical Instruments
The New Grove Dictionary of Opera
The Norton/Grove Dictionary of Women Composers
The Encyclopedia of Popular Music
The Complete Encyclopedia of Popular Music and Jazz, 1900-1950
Biographical Dictionaries
Baker's Biographical Dictionary of Musicians
The Harvard Biographical Dictionary of Music
Dictionaries of Musical Terms
The A to Z of Foreign Musical Terms: from adagio to zierlich
Dictionary of Musical Morphology
Musical Thesaurus: a Dictionary of Musical Language
New Harvard Dictionary of Music
Terminorium musicae diffinitorium. English
Bibliographies of Music
Collected Editions, Historical Series & Sets & Monuments Of Music: A Bibliography
Cross Index Title Guide To Classical Music
Doctoral Dissertations In Musicology
General Bibliography For Music Research
Music Education: A Guide To Information Sources
Music-In-Print Master Composer Index, 1988
Music Reference And Research Materials: An Annotated Bibliography