While the Markov Chain could be used to mimic a symphony, or the generation of text that appears similar to other literature, the question arises as to who owns the new work? The Markov Chain can emit music or text that is modeled after the original training data. Therefore, while the result is very similar to the original author's work, it is a new statistical representation of the original work.
When trigram or larger models are used to model the original work, the complexity and coherence of the resulting work will be extremely interesting.