It's a compilation cd that is marking American Idol's 10th season on Fox.  It'll be in stores on March 15th but you can pre-order it on the American Idol site now.  The disc will feature the biggest hits from all 9 winners along with some others that have been just as successful.

Here's the complete track listing according to the American Idol page:

1. Kelly Clarkson - “Since U Been Gone”
2. Ruben Studdard - “Superstar”
3. Clay Aiken - “Invisible”
4. Fantasia – “When I See U”
5. Carrie Underwood – “Before He Cheats”
6. Taylor Hicks – “Takin’ It To The Streets”
7. Daughtry – “Home”
8. Jordin Sparks (duet with Chris Brown) – “No Air”
9. David Cook – “Light On”
10. Kris Allen – “Live Like We’re Dying”
11. Adam Lambert – “Whataya Want From Me”
12. Lee DeWyze – “Sweet Serendipity”