Music Index Online or ERIC. ERIC is the largest education database, and will provide you with scholarly journal articles. Music Index Online covers music, and will provide you with a mix of scholarly journal articles, and trade journals/magazines.
No luck? Try Education Source.
Image Source: Beethoven's 15th String-Quartet. Public Domain. Wikimedia Commons.
Primo is a discovery search tool that you can use to begin your research or to find additional resources.
Primo does not search everything the library has access to; it should not be used exclusively. It can, however, be a valuable additional resource.