Music
Rex Features
The 26-year-old told MTV that she finds making LPs stressful because of her Attention Deficit Disorder.
Asked how long Girls Aloud will stay together, Harding said: "There are still one or two more albums in us."
She said the band remain committed to their work and have adopted a "retro" feel for new single 'The Promise'.
"We've signed a new contract and it's all looking rosy. I like the 60s vibe and the retro thing is coming back," she said.
"We wanted to stay upbeat but try something a bit different and advanced. I don't think anything we've ever done has ever sounded the same. But we have that same vibe whatever we do because of our vocals."
Harding recently denied press rumours that she has a promiscuous lifestyle, insisting she has never had a one-night stand.
> Click here to watch Girls Aloud's new video
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