Castle (Jolin Tsai album)

Castle (Chinese: 城堡) is the sixth studio album by Taiwanese singer Jolin Tsai. It was released on February 27, 2004, by Sony. Produced by Bing Wang, Peter Lee, Jay Chou, Jamie Hsueh, Huang Yi, and G-Power, it incorporated genres of pop, hip-hop, Latin, chanson, heavy metal, and Britpop. It was well received by music critics, who commented that it consolidated Tsai's successful development trend in the Chinese music scene.

The album sold more than 1.5 million copies in Asia. In Taiwan, it topped the album sales chart for nine consecutive weeks and sold more than 300,000 copies, becoming the year's highest-selling album by a female artist and the year's second highest-selling album overall. Tsai embarked on her first concert tour J1 World Tour after the release of the album, which started on August 7, 2004, in Shanghai, China and ended on April 22, 2006, in Irvine, United States.