"Crazy" is a song written by English singer Seal, and British songwriter Guy Sigsworth. The song was produced by Trevor Horn for Seal's debut album, Seal (1991). Released as his official debut single, "Crazy" became one of Seal's biggest hits. It reached the top five in the United Kingdom, while becoming his first top ten single in the United States. It has since been covered by several artists, including Alanis Morissette, whose version was released as a single from her 2005 compilation album, The Collection.
