The New Grove Dictionary of Music and Musicians
Die Musik in Geschichte und Gegenwart by 
The Guinness Encyclopedia of Popular Music
The Garland Encyclopedia of World Music
The Garland Encyclopedia of World Music is a ten-volume reference work, organized geographically by continent to represent the musics of the world in nine volumes. The tenth volume houses reference tools and descriptive information about the encyclopedia's structure, criteria for inclusion and other information specific to the field of ethnomusicology. An award-winning reference, its contributions are from top researchers around the world who were active in fieldwork and from key institutions with programs in ethnomusicology. GEWM has become a familiar acronym, and it remains highly revered for its scholarship, uncontested in being the sole encompassing reference work with a broad survey of world music. More than 9,000 pages, with musical illustrations, photographs and drawings, it is accompanied by 300+ audio examples.
