Carrie Underwood has already seen massive success from her forthcoming best-of album Greatest Hits: Decade #1 - the album's single "Something in the Water" has peaked at No. 24 on the Hot 100. But now, the record's full scale has been revealed, and it's equally massive. Today (Oct. 31), Underwood announced the full tracklisting for Greatest Hits, featuring two new songs, plenty of favorites and some previously unheard demos.

Greatest Hits: Decade #1 spans Underwood's 10-year post-American Idol career by highlighting her biggest hits. Of course, "Before He Cheats," "Jesus Take the Wheel," "Cowboy Casanova" and "Last Name" are all featured tracks that longtime fans of Underwood's can get excited about, Radio.com reports.

But, the album is also slated to feature two new songs. In addition to lead single "Something in the Water," Greatest Hits will also include "Little Toy Guns."

Other bonus material includes four new versions of old favorites, including writing session versions of "So Small," "Last Name" and "Mama's Song."

Check out the full tracklist below:

Disc One:
01. Something in the Water
02. Little Toy Guns
03. Inside Your Heaven
04. Jesus, Take the Wheel
05. Don't Forget to Remember Me
06. Before He Cheats
07. Wasted
08. So Small
09. All-American Girl
10. Last Name
11. Just a Dream
12. I Told You So, feat. Randy Travis

Disc Two:
01. Cowboy Casanova
02. Temporary Home
03. Undo It
04. Mama's Song
05. Remind Me, feat. Brad Paisley
06. Good Girl
07. Blown Away
08. Two Black Cadillacs
09. See You Again
10. How Great Thou Art, feat. Vince Gill (Live from ACM Presents: Girls' Night Out)
11. So Small (Writing Session Worktape 1/24/2007)
12. Last Name (Writing Session Worktape 1/22/2007)
13. Mama's Song (Writing Session Worktape 2/05/2009)

Carrie Underwood's Greatest Hits: Decade #1 will be released on Dec. 9.

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