Art -- Is it Still Just a Human Thing?

The apprehension of AI, Terminator being the prime example, has left many wondering what humans can do better than machines. There aren't many, given that as machines advance they will perform in ways that outdo human capacity. However, many pride themselves on what does make us unique in ways machines can never hope to accomplish: emotions and creativity. Both are central to human culture, but the medium through which they are particularly held high in regard is art. Art by definition is the expression of human creative skill or imagination with the intent of being appreciated for their beauty or emotional power. Humans and only humans have long been the sole possessors of art, but is this still the case?