English singer-songwriter. She is best known for being a former member of the group Sugababes. Range was an original member of girl group Atomic Kitten, although she left the group two years before releasing any material. In 2001 Range replaced Siobhan Donaghy of the Sugababes and had accumulated six UK number one singles as well as two number one studio albums with the group before splitting in 2011. Range has since concentrated on theatre work.