Online Library Catalogs - use to find a vast array of materials, including books, scores, recordings, videos.
- There are a number of sources for online scores. Most of them feature public domain editions. Perhaps the largest and most useful of these databases is IMSLP (International Music Score Library Project).
- use to find full-text information or citations to articles about various aspects of music (often the citiations are accompanied by brief summaries or "abstracts' that describe what the article is about.