Another take on it from Kyle McDonald https://medium.com/@kcimc/comparing-artificial-artists-7d889...
A DeepDream for audio would be very interesting.
Oh, and since you're basically using this commercially you might also want to take a look at the license of the VGG model: https://gist.github.com/ksimonyan/3785162f95cd2d5fee77#file-...
My use would fit under the CC definition of non commercial since the neural net results are handed out for free.