"We weren't sure what to wear and the only thing we could agree on was devil costumes." In a pink wig, blue horns and a purple cheerleading outfit, Sadie Dupuis brings a brightly ghoulish spirit to her Tiny Desk (home) concert, just in time for Halloween. Haunted Painting, her terrific new album as Sad13, is, in part, about metaphorical and literal ghosts: their weight and place in your life, but blasted with the sonic glee of a neon rainbow. While Dupuis' guitar unmistakably squiggles with a vocal vibrato to match, Sad13's pop sensibility differentiates from her other band, Speedy Ortiz; these sweet-and-sour songs explode with creative arrangements and nerdy production techniques.