Cantor Elihu Feldman has put together a 2-part series on the 4 Koussevitzky brothers, important cantors of the twentieth century: Cantors Moshe, David, Jacob and Simcha Koussevitzky. These are excellent brief biographies, giving some background on each of the brothers. Two URL’s from the Cantor’s pages at B’nai Shalom in West Orange, New Jersey.
http://www.uscj.org/njersey/w-orange/cantor/Cantor2003feb.htm http://www.uscj.org/njersey/w-orange/cantor/Cantor2003mar.htm