With Grove Music Online as its cornerstone, Oxford Music Online also contains The Oxford Companion to Music (2002), which offers more than 8,000 articles on composers, performers, conductors, instruments and notation, forms and genres, and individual works; and The Oxford Dictionary of Music, 2nd edition (revised 2006), which supplements Grove's more-extensive articles with content geared toward undergraduates and general users. Both of these sources are included in subscriptions to Grove Music Online.
