ニューグローヴ世界音楽大事典
(MGG, "Music in History and Present Time") is the largest and most comprehensive German encyclopedic dictionary, and among Western music reference sources, only "The New Grove Dictionary of Music and Musicians" is comparable to it in size and scope. It is published by Bärenreiter-Verlag in collaboration with J. B. Metzler'sche Verlagsbuchhandlung.