Britney Spears album has 'dubstep' sound

Britney Spears new album 'Femme Fatale' has a 'dubstep' sound to it, according to Claude Kelly, one of the producers working on it.

Claude said that single 'Hold It Against Me' was 'just the tip iceberg' of what fans can expect from the album.

'It's edgier, darker, grimey, dubstep (influenced) and dancey,' he said.

The album is due out on March 29th.