"To write about something sad and dark, I need to feel content, to feel a sense of well being. I can't write when I'm depressed," Lucinda Williams told me.

Much of my discussion with Williams focused on how we prepare to write. By her own admission, she's obsessed with paper. "I could spend hours in an office supply store," says Williams. A comfortable chair is necessary too, but not too comfortable because, well, it's easy to fall asleep in a deep chair. And coffee is important, not necessarily because of the caffeine but because of the nostalgic element.

We also did some close reading of her father's poetry. I've been a big fan of Miller Williams for many years and taught his poems when I was in academia. We discussed his ability to take decidedly unpoetic images and phrases like radar detector and cellular phone and make them beautiful.

Lucinda Williams' latest album is called World's Gone Wrong.

"I've been very happy lately, and that's worrying," KT Tunstall told me. "It's much easier to write sad songs than happy songs. Happiness makes you want to be present, but pain makes you want to escape. And music has always been a way for me to get out."

Tunstall is adamant about not writing every day. "I love doing nothing, so mindless puttering is especially effective. When she finally sits down, she has rules: no blue pens, and the paper has to be unlined. Why unlined? Because she hates being told what to do, and lined paper represents a means of control.

Tunstall is celebrating the 20th anniversary of her debut album Eye to the Telescope with a deluxe edition out now.

Why do so many of us feel the need to clean our space before we create? Melody Prochet (aka Melody's Echo Chamber) and I discuss why it's important to our respective writing processes. When she's not writing in that nice and tiny space, she's walking along the water, another important element to her songwriting.

The latest album by Melody's Echo Chamber is called Unclouded.