For Yola, songwriting is all about the colliculus. And sometimes a good vacuum.There’s a common motion many songwriters make when telling me where their songs come from: they start grasping in the air, mere conduits pulling songs out of the ether. But if you ask Yola, she’d probably tap her head. “I have an obsessive neurological approach to songwriting,” she told me. The most important part of Yola’s process is her colliculus, a midbrain region. And that’s why this interview was part songwriting, part science lesson. “I farm out my work to my colliculi. It’s the part of the brain that takes things in from the periphery, like that billboard that you barely notice as you zoom by,” she said. Yola doesn’t want her songwriting process to be too analytical. “If I muscle something with my conscious mind, I might fabricate something based on issues I’m dealing with at the times," she told me. It’s why so many song ideas come to her when she’s doing something mundane like driving or vacuuming: she’s not thinking about songwriting. “It’s a state of being unconscious but extremely aware,” she said. Yola has been nominated for two GRAMMYs this year: one for Best Americana album (Stand for Myself) and the other for Best American Roots Song (“Diamond Studded Shoes.”)