In a related question, has anyone seen any information on how some of the example song files are created? Can I get results like that with expert use of the melodist or was there a lot of human intervention in those examples?

I was listening to styles set 47, described as “ Contemporary Country 2”. I found the chord progressions poignant on many of the example files. Did someone just keep clicking the compose button until a touching song fell out? Did the human composer just enter the chords? Or was it some combination?