What is bidou?

Some articles on bidou:

Bidou Yamaguchi - Present Work
... Initially Bidou created many of the traditional Noh masks ... of women were being painted by famous artists in Europe, Bidou began sculpting a series of these Western faces in the form of Noh masks ... Sauer) Bidou says, "by synthesizing both traditions, I create three-dimensional ‘personae’ that breathe new life into these iconic faces and seek to suggest a fresher fusion of Eastern and Western cultures ...