Duffy is a Welsh singer-songwriter from Nefyn, Wales. She has released two studio albums, entitled Rockferry & Endlessly respectively. The former album and its singles have amassed various awards, due to the critical success of her freshman effort. Rockferry and her worldwide successful single "Mercy" were nominated for three Grammy Awards in 2008. The former won the award for Best Pop Vocal Album at the 2009 ceremony for those awards.