Music Index Music citation index, begun in 1949; online version indexes 1974-2008, with link-outs to JSTOR, where available. Valuable starting-point for all music disciplines, primarily English-language, the Music Index provides comprehensive coverage of the music field and every aspect of the classical and popular worlds of music. With cover-to-cover indexing and abstracts for hundreds of periodicals, this resource is an invaluable resource for both the novice and scholar.