The singer was one of the founding members of the platinum-selling, chart-topping girl group, which saw several line-up changes over the years before announcing a comeback with the original three stars - Siobhan Donaghy, Mutya Buena, and Buchanan - last year.As Black Lives Matter demonstrations continue around the world following the death of George Floyd, Buchanan speaks about her experiences in the group in a YouTube video entitled Life As The 'Black' Sugababe - My Story.Highlighting press