Remember the library has journals in hard copy as well. Some titles are listed on the links above.
All print journals are listed in the catalogue. Of course, you can also wander the bound periodical shelves on the first floor. Journals are filed alphabetically by title.
There is a difference between owning a score or recording and having permission to duplicate it or perform it!
"Fair use" does not apply to music licensed for performance or broadcast. Always confirm that you have a performance license or written permission!
Databases provide full-text access to professional writing in journals that is not "on the Internet"