Bang & Olufsen's latest music system has a two-side controller designed by the same team that helped create Windows' Metro UI.
Thanks to companies like Spotify, Rdio, and more, a nearly endless succession of music flows from our devices like tap water. So while the design problem of the last 50 years or so has been the best way to get music to people, the design problem of the 21st century is all about how to make sure that, given endless choice, people are always hearing the music they want to hear.