At the time of its release, Westlife had already achieved an unprecedented string of UK number one singles. The compilation brings together these chart-toppers, showcasing the band's mastery of the sentimental power ballad and polished pop harmonies.

For die-hard fans, Unbreakable - The Greatest Hits Vol. 1 was missing a few notable tracks from the early era, such as:

Released on November 11, 2002, is the definitive compilation from the Irish boy band Westlife, chronicling the first four years of their meteoric rise. As the band's biggest-selling album to date, it serves as a chronological showcase of the record-breaking success that defined the turn of the millennium for pop music. A Legacy of Number Ones

A massive duet with the elusive chanteuse herself. Originally a Phil Collins/Genesis track, this pop power-duo version hit #3 in the UK. Carey’s whistle tones complement Nicky Byrne’s spoken verses—a bizarre but beautiful match.