Dir en grey is a Japanese rock band that was formed in 1997. Due to numerous stylistic changes in the band's sound, the group's music is hard to categorize in any clearly defined musical terms. Although, the band's sound is generally considered to be a form of hard rock. But simply pegging the group within the confines of one strict genre is doing the band's music a disservice because of the extremely high level of artistic input that is put into nearly everything Dir en grey creates.