His customary mode of musical discourse, with long singing lines and resonant modal harmonies, is ultimately based on his admiration for and development of Renaissance polyphony.[citation needed] He also used antiphonal effects, which he exploited brilliantly with a large orchestra. Like many American composers of his time, he was deeply impressed by the symphonic achievement of Sibelius.[citation needed] In Harris's best works the music grows organically from the opening bars, as if a tiny seed gives birth to an entire tree. This is certainly the case with the Third Symphony, which joined the American repertoire during the same era as works by Aaron Copland and Virgil Thomson. The first edition of Kent Kennan's The Technique of Orchestration (1952) quotes three passages from this symphony to illustrate good orchestral writing for cello, timpani, and vibraphone, respectively. The book quotes no other Harris symphonies. Few other American symphonies have acquired such a position in the standard performance repertory as has this one, due in large part to the championing of the piece by Leonard Bernstein, who recorded it. Though Harris's symphonies are his greatest contribution to American music, he composed over 170 works, including many works for amateurs. His output includes works for band, orchestra, voice, chorus and chamber ensembles.
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