Jul 25, 2009, 5:00 GMT
The Sugababes were "too complacent" with their last album.
The girl group admit 'Catfights and Spotlights' took them in the wrong musical direction, but still don't believe it deserved the lukewarm reception it received.
Singer Keisha Buchanan said: "We're still really proud of 'Catfights...', even though it wasn't our most successful album.
"I was surprised - I think 'Change' should've got those bad reviews, because that was a real pop record. With 'Catfights...', we decided to go a bit old-school and stripped-back. But if we stayed in the place we were in, we'd never move on."
The singer admitted the group realised they needed to do more than just sing in order to keep their fans happy.
Keisha - whose bandmates are Heidi Range and Amelle Berrabah - added to the Guardian newspaper: "I'd walk off stage and wouldn't even have broken a sweat. It was like I'd just walked to the bottom of my road.
"When I say complacent, I mean we had put ourselves in boxes and said we were just singers.
"The industry is changing. We used to say in interviews that we could put bin bags over our heads and people would still come to see us. But they wouldn't now. People want to see the whole package. They want to know all about you. We took our eye off the ball and didn't concentrate on the performance and styling side."
Your Talkback on this Story