"What Makes a Man" is a song by Irish boy band Westlife. It was released as the third single from their second studio album, Coast to Coast (2000). It was their first single not to peak at number one on the UK Singles Chart, being beaten to the Christmas number one by "Can We Fix It?", the theme to the cartoon series, Bob the Builder. It also debuted and peaked at number two in Ireland, held off the top spot by Eminem's song Stan.

The song was the 39th best selling single of 2000 in the UK, and received a gold sales certification in the UK for over 400,000 copies sold.

Westlife were an Irish boy band, formed in Sligo in July 1998 and disbanded in June 2012. Originally signed by Simon Cowell and managed by Louis Walsh, the group's second and final line-up consisted of Nicky Byrne, Kian Egan, Mark Feehily, and Shane Filan. Brian McFadden was a member from July 1998 until his departure in March 2004.

Westlife sold over 50 million records worldwide, a total that included studio albums, singles, video releases, and compilation albums. The group accumulated 14 number-one singles in the United Kingdom. They achieved a total of 26 UK top ten singles over their 14-year career.

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