Their fifth studio album, (2004), was a more experimental and introspective work, exploring themes of love, heartbreak, and self-discovery. The album spawned hit singles like "The Reason," "If I Ain't Got You," and "Uptown Girl (Vocal Mix)."
After releasing their eighth studio album, (2010), Westlife went on an indefinite hiatus. In 2011, the group announced their reunion and released their ninth studio album, Greatest Hits (2011), a compilation of their most popular songs.
Their debut album, (1999), was a massive success, featuring hit singles like "Swear It Again," "More Than Anyone," and "Flying Without Wings." The album was certified multi-platinum in several countries and marked the beginning of Westlife's illustrious career.