High Quality Content by WIKIPEDIA articles! Keisha Kerreece Fayeanne Buchanan (born 30 September 1984) is an English singer-songwriter and was a founding member of the BRIT Award-winning girl group the Sugababes. With the Sugababes, Buchanan had six number one singles and two number one studio albums, making the Sugababes one of the most successful British pop acts of the 21st century. Buchanan was asked to leave the band in September 2009 and was replaced by Jade Ewen.