Switch On! is an opening theme (OP) from Kamen Rider Fourze. It was performed by Anna Tsuchiya. It was released on November 23, 2011. It is the opening theme for the Kamen Rider Series Kamen Rider Fourze. "Switch On!" debuted on the Oricon's daily charts at number 15, while its music video hit number 3 on the Rekochoku video download charts. The single ultimately peaked at number 13 on the Oricon's Weekly Charts and 24 on the Billboard Japan Hot 100.