Released in 2000 on the album Swear It Again, "Forever" is a defining track in the career of the Irish boy band Westlife. As a staple of their early discography, the song exemplifies the polished pop-rock and ballad style that characterized their rise to international fame during the turn of the millennium. The recording features the group's signature harmonies and emotional delivery, establishing a template for their subsequent work on albums such as World of Our Own and Unbreakable. It remains a central piece in their catalog, frequently performed live and recognized as a modern classic within the genre.