LEONARD BERNSTEIN - - - Leonard Bernstein was a highly influential and dynamic conductor whose career was marked by a meticulous approach to interpretation and a deep commitment to musical education and innovation. His professional trajectory began with a dramatic breakthrough in 1943 when, with less than 24 hours' notice and no rehearsal, he substituted for the ailing Bruno Walter at Carnegie Hall, leading the New York Philharmonic in a challenging program and instantly establishing himself as