This is a classic CRPG from the old days with slightly better graphics and a slightly more confusing skill system.
Otherwise the demo takes about 2 - 4 hours. You get to a certain point in the story when the demo ends, not an arbitrary 1 hour. I play with the sound off so I can't tell you about music. There is no dialogue that is spoken, it is all written.
You get to explore and fight to your heart's content. The developer always includes some dicey ethicial issues. Your character can ge good bad evil ugly and any one of four different professions.
Anyone who wants a bit of a stretch beyond the Aveyond series but is not interested or ready in Dragon Age should take a look at the demo.