The Jazz Discography includes information about jazz recordings dating back over 100 years. From the website: “The Jazz Discography is the world's largest and most complete source of information about jazz records and jazz recording sessions. Recording sessions are listed by bandleader name and presented in chronological order. Session details include the titles of each tune recorded plus the names of all supporting musicians and the instrument(s) they played. The date and location of each recording plus matrix and record company release numbers are also shown.
Oxford Music Online is the access point for Grove Music Online and other Oxford music reference resources.
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In-depth and brief articles on all aspects of music. Includes links to related sites, including sound archives and illustrations.
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Credo is an online reference service featuring 551 full-text reference titles from over 70 publishers. Other features include: -Dynamic table functionality for world state and county statistics, an interactive world atlas, flash animations, videos, poetry/literature readings, over 700 music files, and a concept map. -More than 200,000 images from all subject areas, over 200,000 audio pronunciations, and a citation formatter in APA, MLA, and Chicago formats for all articles.
The New Grove Dictionary of Jazz by 
