Answer: I think this is a "what do you think" question, so essentially any answer you give will be right, unless you say something like "ugly poop music" or something. (yeesh, so mature) anyway, since the 20th century was referred to as the 'modernist musical era' I'd say maybe post modernist era or something. But since it's a "what do you think" question, anything works, really.
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I hope this helps! mark brainliest? Have a happy 2021~!