Now known internationally through the recordings of King Sunny Ade and others, juju music originated more than fifty years ago among the Yoruba of Nigeria. This history and ethnography of juju is the first detailed account of the evolution and social significance of a West African popular music. Enhanced with maps, color photographs of musicians and dance parties, musical transcriptions, interviews with musicians, and a glossary of Yoruba terms, Juju is an invaluable contribution to scholarship and a boon to fans who want to discover the roots of this vibrant music.