The original line-up of the Sugababes admit that the constant line-up changes in the band had an impact on the music they produced.
Ahead of the release of a re-issue of their influential debut album One Touch, members Keisha Buchanan and Siobhan Donaghy talked to NME about revisiting their earlier material, and how the sound of the group changed as members - first Siobhan, then Mutya Buena, then final original member Keisha - departed.
"For me, the Sugababes was about our harmonies and three voices put together," Keisha said. "After Siobhan left, Mutya and I tried to continue our signature sound.
"When Mutya left, it became harder to maintain that. Every time someone leaves, it changes the dynamic."
Keisha goes on to say that "there might be some people who liked" the final line-up of Heidi Range, Amelle Berrabah and Jade Ewen but for her, "it changed and lost its essence."
Siobhan also adds that she was a fan of the first album Sugababes released after her departure, 2002's Angels With Dirty Faces, which contained two Number 1 hits - Freak Like Me and Round Round.
"[I always] felt like the direction you went in after I left was beautiful," she added. "It felt like a natural progression."
The reissue of One Touch - released October 1 - will be available on limited edition tri-colour vinyl, coloured vinyl, 2CD and digital. It originally peaked at Number 26 on the Official Albums Chart during its original release, and contained the group's debut Top 10 hit Overload. View Sugababes' Official Chart history in full here.
Overall, Sugababes collected six UK Number 1 singles during their initial tenure. The original line-up launched an ill-fated re-brand as Mutya Keisha Siobhan in 2013, but Siobhan recently teased that new music from the re-formed group could be on the way.