Yes, a street artist can become a master. “The Wizard of Brooklyn” was a completely self-taught artist who was also a holistic healer at one of the world’s largest mental hospitals. Psychoanalysts said he fit the profile of a classic reclusive hoarder. Bartnikowski found it difficult to part with his thousands of paintings because collectively they formed the ultimate cathexis, and he referred to them as his “exquisitely orchestrated onesong.”