How did Arnold Schoenberg impact music in the early 20th century?

Arnold Schoenberg was an Austrian composer and painter. His music in the late nineteenth century and the early twentieth century was of profound importance, for he developed the highly celebrated twelve-tone technique. He was also known to be the master of developing variation construction principle.

Explanation:

bias is a tendency to prefer one person or thing to another, and to favor that person or thing. desire to avoid the appearance of bias in favor of one candidate or another. to bias someone means to influence them in favor of a particular choice.

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