The album was released on October 18, 1999 on Virgin Records and contains elements of rock music with pop & ambient electronic music, along with some R&B, doo-wop & new age music which contrasted with the sound of the Spice Girls. It received mixed to positive reviews by critics and was critically & commercially successful, selling over 900,000 copies in the United Kingdom and close to 4 million copies worldwide which became the biggest-selling solo Spice Girl album.