Oxford Music Online (Grove Music Online) Oxford Music Online includes Grove Music Online, the Oxford Companion to Music, and the Oxford Dictionary of Music. Grove Music Online is a frequently updated music encyclopedia with overviews of musicians, compositions, genres, and other music topics. Note: The library's subscription only allows one person at a time to view Oxford Music Online. When you are finished, please close your web browser so your classmates can access the site. If someone is already viewing the site, and you are denied access, check back again in 30 minutes.