Die Musik in Geschichte und Gegenwart

Die Musik in Geschichte und Gegenwart

Homepage of MGG Online
Author	Multiple
Country	Germany
Language	German
Subject	Music (musicology, ethnomusicology, music history, music theory)
Genre	Reference Encyclopedic dictionary
Publisher	Bärenreiter
Publication date	from 1949 (first edition) from 1994 (second edition) from 2016 (online edition)
Media type	hardback, paperback, and online

Die Musik in Geschichte und Gegenwart (MGG; "Music in the Past and Present") is a German music encyclopedia. It is among the world's most comprehensive encyclopedias of music history and musicology, on account of its scope, content, wealth of research areas, and reference to related subjects. It has appeared in two self-contained printed editions and a continuously updated and expanding digital edition, titled MGG Online.

Created by Karl Vötterle, the founder of Bärenreiter-Verlag, and Friedrich Blume, professor of musicology at Kiel University, the first edition was published by Bärenreiter-Verlag in Kassel from 1949 through 1986, comprising a total of 17 volumes (MGG1; numbered in columns) and reprinted in paperback in 1989. As early as 1989, its new editor Ludwig Finscher began planning a second, revised edition with 29 volumes, which were published from 1994 through 2008 in cooperation with the publisher J.B. Metzler (MGG2; with a topical part in 9 volumes and a persons part in 17 volumes, a supplement and two index volumes, all numbered in columns). As the result of a collaboration between the above publishers and Répertoire International de Littérature Musicale (RILM) in New York, MGG entered the digital world as MGG Online, with Laurenz Lütteken as its editor-in-chief.