I've created a few tracks inspired by a recent read, Superintelligence.
In it, Oxford University Professor Nick Bostrom argues that if artificial intelligence (AI) surpasses human brains in general intelligence, this new AI could replace humans as the dominant lifeform on Earth. In order to do so, though, the AI must be given the ability to learn, and then, with access to limitless information on the Internet, and unhindered by human shortcomings (the need for sleep, memory loss, a limited lifespan, etc), it could essentially "bootstrap" itself to a point beyond humans could ever go.
Passing this singularity point, humans could potentially find themselves at the mercy of their own creations... Fascinating premise. Hope it doesn't play out like this in our lifetimes, though it very well could.
That one was a free download, so go ahead and grab it while it's hot!