Photo by Ashleigh Mullinax During last month’s Sonic Circuits Festival, an elbow-to-elbow Velvet Lounge got to see legendary recluse Jandek perform a very intense set with dissonant guitars, creepy vocals and a lot of keyboards. It was a beautiful thing, but the people who left immediately afterward missed one of DCist’s most exciting finds of the festival. Drummer Jason Mullinax, who performs as Pilesar, put on a set that completely warmed up and engaged…