UST Libraries has a variety of to help you find historical or background information on sacred (religious) music. The libraries also have many resources to help you select works for performance. One of the best ways to find sacred music is to use the subject search.
Use the Advanced Search in LibrarySearch to find sacred music. Click on the "LibrarySearch: Advanced Search" link, select "Books" from the Material Type drop-down menu, and select "Subject" as the search field (in the first row). You can add additional search terms in the second row.
Suggested subjects:
Large collection of ebooks on all subjects. Some books are downloadable.
Large collection of ebooks on all subjects. Please note that some books are limited to a single user at a time. Others allow unlimited simultaneous users.
The Oxford Handbook of Jewish Music Studies by 
Word, Chant, and Song by