Gretchen Wilson's favorite classic rock era is the '70s.

In fact, she likes it so much that she's releasing a "six-pack" of cover songs that includes Rod Stewart and Faces' "Stay With Me," The James Gang's "Funk #49" and songs by Van Morrison and Bad Company.

"I've decided that moving forward, I'm going to try to give songs to my audience that move me," she tells Billboard magazine. "I'm not gonna pay as much attention to whether it has a fiddle or a steel guitar in it."

Gretchen says they just finished mixing the first of two six-packs that will come out next year.

"We decided to do something that would be really fun and familiar, and a project of originals."

And don't be surprised to see other genres from Gretchen in the future.

"If you're closed minded, and only listen to one style of music, your creativity will suffer in the long run," she says.