The preeminent digital encyclopedia for music researchers worldwide What is MGG Online? MGG Online builds on the second edition of Die Musik in Geschichte und Gegenwart (MGG, 1994–2008), offering new and substantially updated content as well as continuous updates, revisions, and additions. MGG Online is being developed by Bärenreiter and J. B. Metzler in partnership with RILM. Topics MGG … Continue reading MGG Online