In this two-volume encyclopedia, Komara (State U. of New York at Potsdam) provides about 2100 entries, both brief and extensive, on the blues, its history, culture, roots, contemporary styles, artists, historians, songwriters, record labels, forms, characteristics, instruments, songs, regions, historiography, music business, and related forms. A sampling of topics: Louis Armstrong, Robert Cray, funk, Willie Dixon, Big Bill Broonzy, country music, Africa, rock `n' roll, recording, piano, Memphis, marketing, Texas, topical blues, and lynching. Discographies and bibliographies for each entry are included, as well as a thematic list of entries and an index in each volume. Annotation ©2006 Book News, Inc., Portland, OR (booknews.com)