I've already given the example of auto tune, loops and synthetic sounds. People care surprisingly little about authenticity and the top charts are telling about

I've already given the example of auto tune, loops and synthetic sounds. People care surprisingly little about authenticity and the top charts are telling about the intellectual preferences of the masses. Perhaps an RNN could even be trained with recordings of human emotional responses like heart rate and goosebumps. It's not just about changing the pitch here and there, but learning deep features about what makes music interesting to listen to. Music doesn't need to be as coherent as a text (in fact some space for interpretation is often preferred), which also increases my confidence about this prediction.