Music recordings and videos (dvds) are listed in the Library Catalog. Restrict a search to DVDs by using the limit feature called Material Type.
DVDs are shelved at the Circulation Desk, and most are limited to in-library use only. An example of a series applicable for music history is the Norton Recorded Anthology of Western Music 780.9 N827rawm (DVDs) Search individual dvds in the Catalog and request items at the Circulation Desk of the Library.
When searching the Library Catalog, use the Material Type limit feature for SCORES.