The rapidly increasing power of artificial intelligence opens up many new possibilities for computer-generated media. Earlier this year, a novel written by a computer nearly won a literary award, while last year, Google's DeepDream made waves on the internet with its extra-trippy algorithmically-generated images. It's becoming increasingly clear that computers are getting better and better at creating things that we instinctively think are made by humans.
Google, with its vast resources of computing power and one of the most forward-thinking visions of any company in history, has moved to the forefront of AI development in recent years, and its latest project, Magenta, is no exception. Magenta makes use of advanced machine learning (here's a great post on that by the aptly named 
Opus 1
The piece of music below is Magenta's first publicly released creation. In order to compose it, Google researchers fed hundreds of musical recordings into Magenta's neural network (a system of interconnected computers that's designed to work in much the same way as a human brain), allowing it to analyze this data and learn from it. In so doing, Magenta was able to detect frequently used sequences of notes and learn the basic rules of melody and chord progression - enough to create a basic, but entirely convincing melody of its own.
It's not going to win any awards, but the amazing and slightly scary thing about this melody is that, like the aforementioned novel, it could easily pass for a human creation. This raises some deep and potentially unsettling questions about the nature of art and creativity in general.
But is it art?
Humans have long considered art to be one of the defining things that makes us...well, human. No other species that we know of creates things purely for the sake of their beauty or emotional expression. And it's because of this power to make us feel that art has such an important place in every human culture - it's a fundamental expression of our own humanity.
As a musician myself, the idea of computers being able to generate passable pieces of music is both fascinating and troubling. On the one hand, having such powerful tools that are capable of learning and creating at a nearly human level could serve as powerful aids to the composition process. For instance, I write a lot of music for films and advertising, and producers are always sending me reference pieces that they would like my compositions to draw on. Wouldn't it make my job easier to be able to feed all of those pieces into a piece of software like Magenta and have it supply me with a similar, but original chord progression or melody that I can then alter and embellish to my own satisfaction?
On the other hand, as you might expect, this feels like cheating. If a piece of art is not created entirely by a human being, is it really art? Philosophers and artists have wrestled with this question more and more as technology has developed and styles have changed - indeed, some artistic styles, such as process music, have made a point of asking this question by removing the human element from composition as much as possible. Would we feel the same about Mozart's symphonies or the timeless songs of The Beatles if we knew they had been partly composed by an unfeeling computer?
Co-creators - or competition?
If artificial intelligence continues to develop at its current rate (with computer power doubling once every two years), there's every likelihood that its 'creative' output may well surpass our ability to distinguish between computer-generated and man-made art. In which case, as with industrialization, those of us in a line of work in which machines can produce products of equal or even greater quality, with more efficiency and lower costs, may find ourselves quickly out of a job. Taken to its extreme, we could even end up in a situation where all popular music is generated according to a AI-determined formula (though come to think of it, if you listen to the Top 40 these days, we're not that far off).
Regardless of how you or I might feel about it, that certainly isn't going to stop the relentless pursuit of progress. Computers are inevitably going to become ever more powerful at an exponential rate, and software like Magenta is going to continue learning and getting better at producing things that we previously assumed only humans were capable of. Funnily enough, while popular culture has largely envisaged a world where artificial intelligence takes over the world by force, these new developments open up a different and far more sinister route by which AI domination could be achieved - by taking over our culture.
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