Nietzsche

Recently, able to think and play again in a way that has eluded me for years, I have been devoting a lot of thought to the bigger picture concerning my art. What constitutes a justification of art? Is it emotional expression? Can a justification of art be generated by an extrapolation from some simple axioms? If there is a justification of art, does it demand that art be original? I should preface this discussion with the disclaimer that this discussion concerns only an investigation of my personal notion of what constitutes a justification for art and not a judgment on whether or not any work that doesn't meet the criteria that I will set forth has redeeming value.