Midriff-baring songbird Shania Twain is singing a shocking tune: She doesn't care if she ever performs again.

The 37-year-old country singer's new album, Up, has soared to No. 1 on the U.S. charts, but Twain hinted to Time magazine that she will soon stop performing.

"I never burned to perform, and I don't care if I ever perform again," she said. Twain -- whose 1997 album, Come on Over, sold an astounding 19 million copies and is the best-selling album by a female singer in U.S. history -- has been called the "world's highest-paid lap dancer" by country rebel Steve Earle.

She has been in seclusion with her producer hubby, Mutt Lange, in Switzerland the past two years and gave birth to a son in 2001.

Twain moaned to the magazine about the pressures of fame and said that's why she left the United States.

"I don't feel free," the Canadian native said. "I don't feel free to do what I want. I could never just do anything for fun. It's such a waste of time to do something for fun.

"I can't live the rest of my life like this."