Song Index . H.W. Wilson, 1926. Also Supplement, 1934. The main volume and supplement together index ca. 20,000 songs in 280 collections.
Entries are by title, composer, author, with references from first line to title.
Broad in scope, including operatic arias, art songs, folk, popular, etc. Includes classified list of collections indexed. A number of books in the Reference Collection provide listings of popular songs. These are useful for finding information about a song, such as when it was popular, if it was originally from a musical show or movie, composer or librettist, awards won, and other information. Also includes list of Oscar-winning songs.