Ashley Michelle Tisdale is an American actress, singer and television producer who rose to prominence portraying the candy-counter girl Maddie Fitzpatrick in Disney Channel's The Suite Life of Zack & Cody and the female antagonist Sharpay Evans in the High School Musical film series. Her role as Evans required her to perform several songs in the film series' soundtracks. Tisdale became the first female artist to debut with two songs simultaneously on the Billboard Hot 100, in the week of February 12, 2006, with "What I've Been Looking For" and "Bop to the Top", both songs from the first High School Musical soundtrack — the top-selling album in the United States for 2006.After her first High School Musical appearance, she signed with Warner Bros. Records and launched a solo music career. Her debut album Headstrong, was released in February 2007, debuted at number five in the U.S. chart, selling 64,000 copiesand was later certified Gold by the Recording Industry Association of America. A second studio album, Guilty Pleasure, was released in 2009. Tisdale has also a prominent voice role as Candace Flynn in Disney Channel's Phineas and Ferb and also starred in the 2008 television film Picture This and in the 2009 feature film Aliens in the Attic.