Fresh from the clogged tubes of teh intarwubs…
"What people are going to be selling more of in the future is not pieces of music, but systems by which people can customize listening experiences for themselves. Change some of the parameters and see what you get. So, in that sense, musicians would be offering unfinished pieces of music – pieces of raw material, but highly evolved raw material, that has a strong flavor to it already. I can also feel something evolving on the cusp between "music," "game," and "demonstration" – I imagine a musical experience equivalent to watching John Conway's computer game of Life or playing SimEarth, for example, in which you are at once thrilled by the patterns and the knowledge of how they are made and the metaphorical resonances of such a system. Such an experience falls in a nice new place – between art and science and playing. This is where I expect artists to be working more and more in the future. "