quarter tone

US /ˈkwɔːr.tər ˌtoʊn/
UK /ˈkwɔːr.tər ˌtoʊn/
"quarter tone" picture
1.

quarto de tom

an interval of a quarter of a tone, half a semitone, or 50 cents, common in some non-Western music.

:
Many Middle Eastern musical traditions extensively use quarter tones.
Muitas tradições musicais do Oriente Médio usam extensivamente quartos de tom.
The microtonal piece featured several intricate passages with quarter tones.
A peça microtonal apresentava várias passagens intrincadas com quartos de tom.