Rosa Isabel Mutya Buena (born 21 May, 1985 in Kingsbury, London), known professionally as Mutya Buena, is a BRIT Award-nominated Filipino British singer and songwriter, who rose to fame as a member of the pop group Sugababes.
Since scoring a record deal, the band has gone on to become one of the most successful UK-based female groups in British history – second only to the Spice Girls in terms of record sales. They have had four platinum selling albums, six number one singles, a BRIT-Award as well as a platinum-selling greatest hits album. However, in late 2005, Buena announced that she was leaving the group because of "personal reasons". Since her departure from the Sugababes, Buena has worked with a range of record producers and artists, including BRIT and Grammy Award winning and platinum-selling jazz artist Amy Winehouse, George Michael and dance music writers Groove Armada.