Baker's Biographical Dictionary of 20th Century Classical Music , ed. Schirmer Books, 1997. Not only updates the biographies of twentieth-century musical luminaries in the parent Baker's, but includes also information concerning many other important musical personalities that have recently achieved prominence. Edited by Don Michael Randel. Belknap Press of Harvard University Press, 1996.
Biographies are brief, but well written, and use is made of the latest research.
Especially valuable for student use. Edited by Don Michael Randel. Belknap Press of Harvard University Press, 1986. This edition is actually the third to be published, and use of computer technology was made in its compilation. A standard reference tool since 1949.