Christina Aguilera wants to tone down her singing voice.

The 'Dirrty' singer has been working with her favorite band, electro pop outfit Ladytron, to help her develop a "softer vocal sound".

Ladytron founder, Daniel Hunt, said: "She's an absolutely amazing singer but one of the things she talked about was working with a softer vocal sound, so I think the stuff we do will feature simpler melodies."

The 28-year-old singer hired the band to help her achieve her new sound after she fell in love with the British quartet's music.

Daniel, 29, said: "We first heard that we were one of Christina's favorite bands last summer. We were thrilled. So we went over to Los Angeles to meet her in December where she identified the type of Ladytron songs that she liked. We were impressed because she had a real deep knowledge of our music - album tracks, not just the singles."

A live collaboration between Christina - who has a one-year-old son Max Liron with husband Jordan Bratman - and the band has not been ruled out, with Ladytron keen to show off their work onstage.

Daniel added to Britain's Daily Star newspaper: "We're going to finish off some more tunes with her in March.

"We haven't discussed performing together but I'd love for us to do something - maybe be her backing band for a show or two."