After her first High School Musical appearance, Ashley Tisdale 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 with 64,000 copies sold in the first week and was later certified Gold by the Recording Industry Association of America. A second studio album, Guilty Pleasure, was released in 2009. Tisdale also has a prominent voice role as Candace Flynn in Disney Channel's Phineas and Ferb and appeared in the 2009 feature film Aliens in the Attic. In 2010, she was cast as the peppy and intense cheerleader Savannah Monroe in The CW comedy-drama series Hellcats.
