1,600 books and 50,000 journal articles from the 19th century. Easy browsing in census data for each state and county from 1790 to 1970. Historical demographic, economic, and social data. Accessible by album, artist, song title, style, and record label. Full text keyword search.
Emphasis is on popular music more than world music.
Has the original Charlie Ryan lyrics to Hot Rod Lincoln. Fewer hits than, say, Altavista, but much better relevance. Maintained by Harvard University. Links to publishers, copyright, review, and music software. Searchable database of composers, manuscripts, and repertoire.