Pierian is an adjective that means related to the arts. 

Our word of the day gets its name from a region in ancient Macedonia known as the Perian mountains. In this mythical place, the Muses were said to bestow people with artistic ability and inspiration. Since the 16th century, Pierian has been used to describe anything of an artistic nature. 

My son’s pierian tendencies haven’t served him well in school. His writings on the bathroom walls may have been the result of artistic inspiration, but they’re usually frowned upon by the principal.