Which television show brought fame to the American singer of 'Cowboy Casanova'?
Cowboy Casanova: "Cowboy Casanova" is a country song by American singer Carrie Underwood. Carrie Underwood: Carrie Marie Underwood (born March 10, 1983) is an American singer, songwriter, and actress. Carrie Underwood:  She rose to fame as the winner of the fourth season of "American Idol" in 2005.
American Idol