quarter tone

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

quart de ton

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.
De nombreuses traditions musicales du Moyen-Orient utilisent largement les quarts de ton.
The microtonal piece featured several intricate passages with quarter tones.
La pièce microtonale comportait plusieurs passages complexes avec des quarts de ton.