I'm very glad this finally becomes available. I immediately asked it to do what I wanted for almost a decade: generate 30 minutes of Bach Cello Suite No.1 in G Prelude[1] (I want to listen to it for hours but don't want a loop neither do I want the whole original - only the prelude, subtle variations are welcome). The result was 9 seconds of ear horror. Do I need better hardware to get a listenable result (I ran it on a Ryzen laptop)?