From RILM.org: "RILM Abstracts of Music Literature is a comprehensive bibliography of writings about music, featuring bibliographic citations, abstracts, and indexing. It covers publications in all document types from around the world on traditional music, popular music, jazz, classical music, and related subjects."
A bibliography of resources related to music, many with full-text of the item described in the citation hosted on the EBSCOhost platform.
Full-text is available for many of the entries. Each entry contains an abstract (synopsis of the source), subject headings related to the information in the article, and publication information. This database contains a mixture of citations to primary and secondary sources.
RILM is an excellent database to use once you are starting to narrow your topic. It is a powerful database, especially if used with appropriate search strategies unique to the EBSCOHost vendor platform.