impressionism
impressionism. Term used in graphic art from 1874 to describe the work of Monet, Degas, Whistler, Renoir, etc., whose paintings avoid sharp contours but convey an ‘impression’ of the scene painted by means of blurred outlines and minute small detail. It was applied by musicians to the mus. of Debussy and his imitators because they interpret their subjects (e.g. La Mer) in a similar impressionistic manner, conveying the moods and emotions aroused by the subject rather than a detailed tone-picture. To describe Debussy's harmony and orchestration as impressionist in the sense of vague or ill-defined is to do them a severe injustice. Some of the technical features of musical impressionism included new chord combinations, often ambiguous as to tonality, chords of the 9th, 11th, and 13th being used instead of triads and chords of the 7th; appoggiaturas used as part of the chord, with full chord included; parallel movement in a group of chords of triads, 7ths, and 9ths, etc.; whole-tone chords; exotic scales; use of the modes; and extreme chromaticism.
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impressionism