You may have heard that Valve's new Steam Controller can ring like a telephone or do the Wilhelm scream. But did you know it can sing songs, too? Let me show you. Here's the new Steam Controller performing the "Ground Theme" from Super Mario Bros. 2: Here is "Still Alive" from Portal - fitting for Valve hardware: I even made it play Doom: View this post on Instagram Are you wondering how the controller, which does not have a speaker, is able to