That year, Sparks also auditioned for American Idol, performing in the Los Angeles tryouts; while she didn't make the cut, she later won the American Idol-affiliated contest Arizona Idol, which allowed her to audition again for the show in Seattle. She made it through to Hollywood on the strength of her rendition of Celine Dion's "Because You Loved Me" and found a place among the 12 American Idol finalists early in 2007. Her performances of songs such as "I (Who Have Nothing)" and "Hey Baby" showed her charm and versatility, and soon made her a fan favorite. Like fellow American Idols Kelly Clarkson, Carrie Underwood, and Taylor Hicks, Sparks was never in the bottom two or three performers throughout the entire competition. Ultimately, Sparks beat out Blake Lewis and Melinda Doolittle to become the sixth American Idol on May 23, 2007. Her debut single, "This Is My Now," was released soon after the show's May finale, and Sparks spent that summer appearing on the American Idol tour.
She also began working on material for her album, reteaming with Leach on songs that were previewed on her website. The single "Tattoo" preceded her self-titled debut album, which arrived in time for the 2007 holiday season. It also spawned the 2008 hit "No Air," which featured Chris Brown and peaked at number three on the Billboard Hot 100 chart. Sparks returned in summer 2009 with Battlefield, which was heralded by its namesake single and helped provide the "spark" for her first headlining tour of the U.S. Sparks spent the next five years concentrating on television work, film music, and appearing on compilations, but in 2015 she ended the hiatus on her solo career with a new studio LP, Right Here Right Now, which was issued via her new joint label deal with Louder Than Life/RAL. ~ Heather Phares, Rovi