atonalism

/eɪˈtoʊnəˌlɪzəm/
noun
  1. A style of music that does not follow a traditional key or tonal center, often sounding dissonant or unpredictable.
    • The composer's use of atonalism made the piece feel unsettling to some listeners.
    • Many 20th-century composers explored atonalism as a way to break free from classical harmony.
    • The music teacher explained that atonalism avoids the familiar major and minor scales.
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