Definition of "atonalism" []

• The school of atonal musical composition (noun)

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• "But influential East Coast critics were not kind to this gorgeous music that seemed so out of step with postwar atonalism."
• "The textbook line is that contemporary European jazzers found their own identity apart from the American motherlode in a severe "free" atonalism (saxophonist Evan Parker, guitarist Derek Bailey), and in a lyrical if sometimes chilly meld of classical tones and (white people's) folk motifs (a lot of what you hear on the influential German label, ECM)."
• "But Chansons d'Édith Piaf has its exquisite moments, the first tune alone, "L'accordéoniste," providing a six-minute journey from atonalism to cabaret to swing."