Mutya Keisha Siobhan: Sugababes row is over By Nesta McGregor Newsbeat entertainment reporter Mutya Keisha Siobhan will release Flatline at the end of June The original Sugababes trio, now known as Mutya Keisha Siobhan, say their row with the current line-up is over. It's all fine. We are moving on. We have moved on. And it's all positive," revealed Keisha Buchanan. Jade messaged me on Facebook the other day. The current Sugababes line-up is Heidi Range, Amelle Berrabah and Jade Ewen. There had been tensions between the two camps after Mutya Buena won a legal fight to use the Sugababes brand name on certain products. I think for us we just want to concentrate on just being positive. We have been through things both as a band and as individuals," said Keisha. The original Sugababes pictured in 2001 - now known as Mutya Keisha Siobhan It's been a year since Mutya Keisha Siobhan, or MKS for short, announced they'd be reuniting. The trio will release Flatline, their first official single as a new group, at the end of June. "We wanted to take our time and make sure it was right," explained Mutya. The most important thing for us was to make sure we did it properly. And it's all positive. Jade messaged me on Facebook the other day Keisha Buchanan Flatline was produced by Dev Hynes, who has worked with The Chemical Brothers, Solange Knowles and Florence and the Machine. "It's a lot more grown up obviously still soulful," added Mutya. MKS band member Siobhan Donaghy, 28, admits that the trio are under pressure to re-create their original success. "It's difficult because there were always going to be expectations about what we do," she said. The comeback single couldn't be obvious but it also couldn't be too out there and left field but I think we've hit the nail on the head. As for the album I think it's important there's not one sound because we all like different music.