Oxford Music Online (limited to 3 simultaneous users)

The gateway to Oxford's premiere music publications, including the fundamental New Grove Dictionary of Music & Musicians (2001), The Oxford Companion to Music (2002), The Oxford Dictionary of Music (2006), The New Grove Dictionary of Opera (1992), and The New Grove Dictionary of Jazz (2001).

In this database, you can find articles on music history, instruments, composers, institutions, performers, and genres.

There is a sign in limit of three simultaneous users. That means that if three people are signed in, a fourth user will have to wait in line until a "place" is open.