Music Reference and Research Materials: An Annotated Bibliography by 
New Grove Dictionary of Music and Musicians by 
New Grove Guide to Wagner and His Operas by 
New Oxford Companion to Music by ONLINE REFERENCE SOURCES
Doctoral Dissertations in Musicology
"Doctoral Dissertations in Musicology (DDM) is an international database of bibliographic records for completed dissertations and new dissertation topics in the fields of musicology, music theory, and ethnomusicology, as well as in related musical, scientific, and humanistic disciplines." Provided by The American Musicological Society.
Folk Song Index
A project of Oberlin College, search by title or first line of traditional folk music.
SHEET MUSIC
Choral Public Domain Library
This Choral-Wiki page host the CPDL.
Digital Sheet Music Consortium
Access to online sheet music.
ONLINE REFERENCE BOOKS - E-BOOKS
Basic Concepts in Music Education by Richard Colwell. 1991
The Art Song by James Husst Hall. 1974
Learning to Read Music by Peter Nickol. 1999
Choosing a Career in Music by John Giacobello. 1999
Composing Interactive Music by Todd Winkler. 1998
CDs
Access the subject heading for CDs in the library's online catalog.
