Leonard Bernstein, August 25, 1918 – October 14, 1990 was an American conductor, composer, pianist, music educator, author, and humanitarian. Considered to be one of the most important conductors of his time, he was the first American conductor to receive international acclaim. Bernstein was "one of the most prodigiously talented and successful musicians in American history" according to music critic Donal Henahan. (from wikipedia)