If you saw Carrie Underwood perform "Something In The Water" on the American Idol finale, you know why she’s among the top top stars the show has ever produced.
In fact, by album sales, she recently passed Kelly Clarkson to take over the #1 spot.
So this is the voice of the show.
On the competition’s final episode Thursday night, she also performed a duet with Keith Urban, a fellow country star who joined the Idol judging panel in later seasons.