As the video says;
"We fed hundreds of Eurovision lyrics and melodies to a deep learning algorithm... and generated the first Eurovision song made by artificial intelligence."
I cant really explain the song itself better than that, you just need to hear it for yourself. For the curious; the computer generated lyrics and basic midi data (the melody) and this is what they made from it.
I also recommend looking at the videos comments on youtube itself, there are some really good takes on there...