Karin Dreijer Andersson is one of the most enigmatic figures in electronic music. The driving force behind Fever Ray and one-half of brother/sister team The Knife, she's been responsible for some of the most beguiling music of the past half-decade. It's music that's often frightening—whether she intends it to be or not—because of the way she twists, masks and terrorizes her own voice, a haunting one-of-a-kind sound that has quickly become a trademark. "It is interesting what you find scary, and especially within music," says Andersson.