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 : Are you wondering how the controller, which does not have a speaker, is able to make audio at all? Valve’s first Steam Controller, even though it was discontinued , was a great gadget for tinkerers — someone even wrote an open-source program to make it “sing.” Fast forward to now, less than a month after the launch of the second-generation Steam Controller , and some enterprising people have used that program to make it “sing” as well. “The way the controller makes noise is through the haptic motors in the trackpads,” CrazyCritic89, the person behind the “Still Alive” and Super Mario Bros. 2 videos, tells The Verge .…