Pop group the Sugababes have gone through a transformation of members over the years. However, when founding members Mutya Buena, Siobhán Donaghy and Keisha Buchanan posted a new song as the now formed MKS, it caught us off guard. “Flatline” is their latest record produced by none other than Dev Hynes aka Blood Orange. Triumphant sounding and cut to pop perfection, the new track marks a great return for the Mutya, Siobhán and Keisha. Have a listen to the preview.