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Last updated: 03 July 2009

Duffy has come seemingly out of nowhere to become of the biggest worldwide sellers of 2008 with her album Rockferry.

Read about Duffy on BBC Cymru (Welsh language)

Video: Duffy performing Mercy on Later... With Jools Holland in 2008.

Let's not beat around the bush here; it's rare for a Welsh solo artist - a singer-songwriter - to be picked up by a major record label, sell millions and be both a Brit- and Grammy-winner.

Read the full Duffy biography.

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