With The Book of Sand composer Michel van der Aa has invented a completely new genre: the digital, interactive song cycle. Inspired by the allusions to infinity and the use of mazes and mirrors in the fantastical stories of Jorge Luis Borges, Van der Aa puts you in a space where all places in the world exist simultaneously. A young woman (played by the Australian pop singer Kate Miller-Heidke) collects up sand which is being moved between the film layers by a mysterious machine. Three parallel film layers reveal alternative points of view and introduce new elements and characters to the story, which allows you to choose a new route through the narrative at any point. It's a wonder of interactivity which will have you returning to it time and again.