See Shania Twain Duet With Nick Jonas at Stagecoach, Perform New Song

Country singer debuted "Life's About to Get Good," and also sang "Party for Two" with Jonas

Shania Twain debuted her new song "Life's About to Get Good" at Stagecoach.

Shania Twain debuted the new song "Life's About to Get Good" at the Stagecoach Music Festival in Indio, California, during her Saturday night headlining set. A bouncy, empowering anthem with pointed lyrics inspired by Twain's own 2010 divorce from producer Robert "Mutt" Lange, the song was "therapy" the singer told the audience.

"I wrote this very specific song about the good and bad in life and how important it is to have both. You have to take the good with the bad; no pain, no gain," Twain said onstage, before launching into some tell-all lyrics.

"It killed me that you'd give your life to be with her / I had to believe that things would get better / it's time to forget you forever," she sang, before taking her own advice in the chorus. "Life's about joy / life's about pain / it's all about giving up the will to walk away / I'm ready to be loved / loved the way I should / Life's about to get good."

Twain also performed many of her Nineties and 2000s hits, including "Any Man of Mine," with admitted Shania superfan Kelsea Ballerini. Pop star Nick Jonas also was a surprise guest, duetting with Twain on "Party for Two." (Watch the video below).

The Stagecoach Music Festival wraps up today, with Kenny Chesney in the headliner slot. Twain's new album is expected this September.