“That’s That,” Audion’s sixth release in his nonstop 2009 assault of singles, has duel personalities, comprising two discrete movements within its eight-and-a-half minutes—a theme-and-variation approach that makes for a brain-warping listen. First, we get the main theme—a rapid-fire call and response between an acid-tinged bass groan and a two-toned “ping!”—repeated and modulated, riled up and cooled down ad infinitum. At the halfway point, Audion pulls out the rug from under us: mashing the samples up against one another, twisting the pings into mobius strips, folding the bass back over itself, and riding the beat, laughing devilishly, into the sunset.