Romanticism is the name of a 19th-century vision of life that found expression in literature, music and the visual arts. Intense emotions and the individual are central in this outlook. The Romantic is discontent with society and flees from the here and now to other cultures, into the past, fairly tales or nature.
The answer is artistic. This is because artistry is in its original form, just like alternative music. It's not going by the crowd and only being influenced by how you feel. Hence, art.