Personnel changes in pop can be unpredictable. When a member leaves, some groups struggle to recover, but if there's one band that proved a change could do them good, it was Sugababes.
Back in 2001, things weren't looking great for the trio. Their debut single Overload - an infectious, sophisticated slice of pop - had been a huge success, but two subsequent singles failed to reach the same highs.
To top it all off, member Siobhan Donaghy decided she'd had enough and wanted out (she's since denied rumours that she told her band mates she was going to the loo and never came back, though wouldn't that have been amazing?).
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