Westlife - Greatest Hits - Unbreakable A collection of timeless masterpieces! The ultimate best-of album from Westlife, who changed the history of UK pop. Since their debut, 10 singles from their three albums have reached No. 1 in the UK. The super chorus group Westlife boasts a worldwide sales record of 25 million copies. They conquered the world with their sweet and delicate chorus. This is their first best-of album, which includes their worldwide success story. It includes all their UK No. 1 hits, as well as the collaboration song "Flying Without Wings feat. BoA."