Carrie Underwood to release 'Greatest Hits,' new single

It's been nearly 10 years since Carrie Underwood won American Idol, and the singer announced today she'll be celebrating a decade of country stardom with a greatest-hits compilation.

Greatest Hits: Decade #1 will include new material, including single Something in the Water. The new track will be available for digital download starting Monday. Underwood wrote Something in the Water with Chris DeStefano and Brett James; Mark Bright produced the track.

Underwood announced the album on NBC's Today and teased the new single with a video on YouTube.

"Something in the Water is so inspirational," Underwood said via a new release. "It's joyous! I can't help but smile when I hear it. I hope it has the same effect on everyone who listens to it."

Underwood will participate in Saturday's Global Citizen Festival at New York's Central Park with JAY Z, No Doubt, fun., The Roots and Tiësto. NBC will produce a one-hour primetime special that will air Saturday (9 p.m. ET).