A 3D pig is spinning on my iPad screen, with a photo of my cat mapped onto it, in front of a galactic cloud with the word DEATH spelled out in capital letters. In the background, Lady Gaga is singing about "Sexxx Dreams". Welcome to the ARTPOP app.
It's the long-awaited interactive companion to Gaga's new album of the same name, and the most high-profile music app since Bjork's Biophilia back in 2011. It was released as a free download for Android and iOS today, and has grand ambitions to say the least.