I like real art. It's difficult to define 'real' but it is the best word for describing what I like to get out of art and what the best art has. It has the ability to convince you that it's present - that it's there. You could say it's authentic. . . but real is actually a better word, broad as it may be.
If you want to say something truly new, you must first know everything that has been said in the human history; not half, not ninety percent, but all that has been said! Only then you can say something new, if you can!