“Flight as a metaphor for fragility, politics, escape, and seemingly all things dire has been a constant for Mathangi Arulpragasam’s music. From her breakout single “Paper Planes,” to her latest “Bird Song,” she’s been able to fluidly incorporate sly yet searing critiques into diversely textured pop music. After a minor dust-up with her label, the Diplo-produced version of her most recent single fr”