Lily Allen was a secret Atomic Kitten

London, April 14 (ANI): Lily Allen was once the secret voice of Atomic Kitten, it has emerged.

When Atomic Kitten members Jenny Frost, Liz Mclarnon And Natasha Hamilton were big names, they landed lucrative movie cameos 'singing' in 2001 Brit flick 'Mike Bassett: England Manager', starring Ricky Tomlinson.

However, their vocal efforts weren't up to scratch on theme tune 'On Me 'Ead', penned by Lily's dad Keith Allen.

It was then the 'Smile' hitmaker made her secret pop debut as a fresh-faced 14-year-old.

"When the Mike Bassett soundtrack was put together, the deadlines were really tight," the Sun quoted a source as saying.

"The producers didn't have time to spend a week in the studio getting the girls' vocals sorted, plus Natasha never turned up because she was ill, so there was a panic.

"Luckily, Keith Allen wrote the song and happened to bring Lily along to a lot of the studio sessions.

"Keith said to give her a try because he thought she had a good voice. Sure enough, everyone was astounded by how good she was.

"It only took her half a day to nail it. Liz and Jenny are on the finished song but Lily was the third member, with the strongest vocal, patching the whole thing up," the source added. (ANI)