Philosophically, impressionism aimed to convey the atmospheric impact of an event, place, or thing, rather than an accurate portrayal of the subject itself. For instance, Debussy's setting of the Prélude à l'après-midi d'un faune is not a literal portrayal of the events of the already vague poem, but a depiction of the feeling of the poem.
Technically, the impressionists invented or began using a great number of new compositional techniques: multi-modality, planing (the use of voices moving in parallel motion; Debussy's prelude La cathédrale engloutie provides an example), extended tertian harmonies, and intentionally ambiguous musical forms.
Impressionist composers also made extensive use of whole tone scales to create a dreamy, "hazy" effect in their works, much like the blurred paintings of Renoir and Monet. They deliberately abandoned the major-minor scales which had been in use since the seventeenth century. Also, a sharp focus on tone color led to many new possibilities.
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Categories: Musical movements