also: アールブリュト
noun
art brut; outsider art
Refers to art created outside the boundaries of official culture, typically by self-taught or marginalized artists. The term is borrowed from French and used in Japanese art discourse.
from French
この美術館ではアール・ブリュットの展覧会が開かれている。
An exhibition of art brut is being held at this museum.
彼
He is known as a collector of outsider art.