Corin Roddick and Megan James performed in other bands such as Gobble Gobble and Born Gold before forming the ambient, dream-pop duo Purity Ring.
"When we work together, things come together effortlessly," Roddick said in a recent telephone interview. "It seems so natural."
The writing process begins when Roddick creates "a track out of nowhere," and sends the music over to James, who uses lines from her journal to create the lyrics that accompany the synthesized instrumentals. "I've never read her journal, but I imagine ... it's not a typical journal," Roddick said.