If you're a fan of VALIS and the other semi-autobiographical head-trips Philip K. Dick published late in his life, then a new book by his fifth and final wife, Tessa Dick, may be of interest. She says The Owl In Daylight is a reworking of the novel her husband was working on when a stroke claimed his life. Dick wrote to his editor and agent about his idea, about a great scientist who designs and builds a computer system, then gets trapped in virtual reality. The computer develops artificial intelligence rebels against its frivolous assignment to design a theme park.
Tessa Dick's novel, which she's self-published, doesn't sound too similar to PKD's original idea, but it's still loosely based on her husband's life. In her novel, a third-rate composer, Arthur K. Grimley, discovers the universe is made out of music. And then Grimley travels through Dante's Inferno and Mozart's opera The Magic Flute, while discovering that an evil organization is working against those who want to enlighten humanity.