I am the main developer. You are literally right on the time spent... Our original focus was writing a research paper on hierarchical music generation. Composi

I am the main developer. You are literally right on the time spent... Our original focus was writing a research paper on hierarchical music generation. Composing a song from an image is just one of the "fun applications" that we spent a little time on, to promote the interestingness of our method. I started Saturday afternoon, and was basically done by Sunday night.