Three years ago, Tegan and Sara transformed from indie rock mainstays to legitimate pop stars. Their 2013 albumHeartthrob saw them crack Top 40 with synth-pop confections like “Closer” and share stages with the likes ofTaylor Swift and Katy Perry. For the duo’s upcoming eighth album, Love You to Death, Tegan and Sara reunited with Heartthrob producer Greg Kurstin—a.k.a. the guy who went on to produce that inescapable Adele song—but they’re anything but complacent after ascending to the mainstream.

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