Mark Walk co-wrote and co-produced "Salt Peter." Rankine says that she doesn't really see him as a producer, but rather as "a musician first with a great technical knowledge." Rankine says that had she not worked with Walk, her current music would be very different.

"He has far more of a technical knowledge than me and a much more diverse knowledge of songwriting," she says. "He's been doing it a lot longer that me, and basically my experience in songwriting was Silverfish. So if I had done it on my own it would have had elements of what ended up on the album but my knowledge was limited. It would probably have been closer to Silverfish."