atonal
US /ˌeɪˈtoʊ.nəl/
UK /ˌeɪˈtoʊ.nəl/

1.
atonal
not written in any key or mode; lacking tonality.
:
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Schoenberg's early works were revolutionary for their atonal compositions.
Schoenberg'in erken dönem eserleri atonal besteleriyle devrim niteliğindeydi.
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The modern piece of music was entirely atonal, challenging the audience's traditional expectations.
Modern müzik eseri tamamen atonaldı, dinleyicinin geleneksel beklentilerine meydan okuyordu.