Here's a link to AIVA's Soundcloud page.
AIVA is developed by a company in Luxembourg called AIVA Technologies. The developers have used deep learning and reinforcement learning with a large number of classical music partitures as the training material. The details of the teaching process were not explained on the website. The Wikipedia page refers to a French language news article I tried to have Google Translate translate without success.
What do you think about Symphonic Fantasy in G sharp minor, Op. 7, “The Awakening”? It is a bit repetitive but perfectly adequate for a piece of film or game music. I liked the second part in particular. I would appreciate if any reader who knows more about this system could give references to more information.