Book excerpt: The Song Index features over 150,000 citations that lead users to over 2,100 song books spanning more than a century, from the 1880s to the 1990s. The songs cited represent a multitude of musical practices, cultures, and traditions, ranging from ehtnic to regional, from foreign to American, representing every type of song: popular, folk, children's, political, comic, advertising, protest, patriotic, military, and classical, as well as hymns, spirituals, ballads, arias, choral symphonies, and other larger works. This comprehensive volume also includes a bibliography of the books indexed; an index of sources from which the songs originated; and an alphabetical composer index.