In the summer of 2006, Sparks auditioned twice for the sixth season of American Idol: once in Los Angeles but failed to make it past the first round; and again in Seattle after winning Arizona Idol, a talent competition conducted by Phoenix Fox station KSAZ-TV. The Seattle audition is the one seen in the January 17, 2007, broadcast of American Idol, in which she earned a "gold ticket" and the right to appear in the Hollywood Round. American Idol judge Randy Jackson made the offhand prediction that "Curly hair will win this year. " While on the show, Sparks gained a loyal fan base known as "Sparkplugs". On May 23, 2007, Sparks was crowned the winner of the sixth season of American Idol. She remains the youngest winner in American Idol history. Cowell said, "Jordin was the most improved over the whole season – didn't start the best, but midway through this was the girl who suddenly got momentum. " He included that "Young girl, likeable, and the singer won over the entertainer [Lewis]. " Four selected songs Sparks had performed on American Idol, including the season's coronation song, "This Is My Now", were made available on her self-titled EP, released on May 22, 2007, the day before the grand finale. The coronation song "This Is My Now" peaked at number fifteen on the Billboard Hot 100, becoming Sparks's first top-fifteen hit on the chart. The following summer, Sparks took part in the American Idols LIVE! Tour 2007 from July 6 to September 23, 2007, along with other contestants in the top ten.