Angie Reed has shed the nylons and pencil skirts of her debut album’s tour, “The Best of Barbara Brockhaus Live Secretary Show,” but three years later, she still wears the attitude. There’s something risqué yet lovable about an innocent voice purring out lyrics like a sassy sex worker; in “Hustle a Hustler,” Reed croons assuredly, “Ain’t nothing wrong with your ding dong” and in “Dancing Tarantella to a Machine Gun,” she scolds the boys for messing with the wrong gal. Reed’s use of texture gives the songs a unique sensuality, with backbeats rubbing against bells and whistles and beatboxing, and her softly ironic coo throttling its subject matter. Each spin of XYZ Frequency feels like being touched for the very first time: You never know quite what to expect.