The newest version of Spotify makes full use of the high-powered nature of your touchscreen device. With this feature in play, you're able to drag your thumb around the screen, moving through songs as you do so. Previewing each song, album, or artist as you like, all on a grid of images that make discovering music a visual experience, as well. This newest feature is only available - at first - on iOS devices. That means iPad and iPhone, and just the latest couple of generations.