If you've ever wanted to know what it might be like to see Kim Jong-un let loose at karaoke, your wish has been granted, thanks to an app that lets users turn photographs of anyone – or anything remotely resembling a face – into uncanny AI-powered videos of them lip syncing famous songs. The app is called Wombo AI, and while the future of artificial intelligence and the ability to make fake videos of real people strikes fear into the hearts of many experts, some say that Wombo could help by raising awareness of "deepfakes". Wombo CEO Ben-Zion Benkhin said he came up with the idea "while smoking a joint with my roommate on the roof". The app launched in Canada in February and has since been downloaded on Apple's App store and Google Play more than 2m times. There are 15 songs users can choose from, including Michael Jackson's Thriller and the more recent Gunther's Ding Dong Song.