Unbreakable: The Greatest Hits Volume 1 is the fourth studio album and first greatest hits album by Irish boy band Westlife. The album was released on 11 November 2002. The album consists of all of the group's past singles, along with six brand new songs. Hit single "Flying Without Wings" was re-recorded as a duet with Korean superstar BoA and Mexican singer Cristian Castro, and each respective duet was included on the Asian and Spanish versions of the album respectively.