Plus Mars Volta and Digitalism added to Irish festival line-up
The unlikely couple record a cover of 'Womanizer'
Singer explains decision to work with different producer
Singer currently topping the album and singles coutdowns
Bruce Springsteen also remains at Number One in the albums chart
Singer also wants Kate Nash to star in film about her life
Singer plans intimate gigs in London, New York and Tokyo
The singer almost pulls a Radiohead
Natalie Portman's Shaved Head will open on dates