Disclosure working with Mary J Blige on her new album 'The London Sessions'
Sam Smith, Emeli Sandé and Naughty Boy also involved in US singer's new record
The sibling duo confirmed their involvement on Twitter after Blige revealed that she made an album in the capital earlier this summer.
Sam Smith is also set to be involved on a "doo-wop" song, while Emeli Sandé, Jimmy Napes, Naughty Boy and Sam Romans have contributed, alongside Rodney 'Darkchild' Jerkins on additional production duties.
Speaking about 'The London Sessions' in The Observer, Blige said: "The sound in London at the moment is house music. That is what the majority of people are producing their songs like. But the ones that get truly successful are the ones using proper songwriting. And that is exactly what we're trying to do, along with a few other people. But that applies to any genre, not just dance music. You could take the songs off Sam Smith's album, produce them in a completely different way and they would still be a huge success – you could produce them like acid jazz and I still feel like they'd get somewhere."
Blige previously worked with Disclosure on a remix of their song 'F For You'. She also provided guest vocals on a new version of Sam Smith's 'Stay With Me' and performed the song live with the singer during his gig at Somerset House in London on July 18.
Earlier this year, Disclosure were forced to deny rumours that they were producing Madonna's forthcoming new album. Rumours began that the British dance duo were working with the pop star after she posted a picture of her with them at the Governors Ball festival in New York in June.