Disclosure and Sam Smith are working with Mary J. Blige on her new LP, The London Sessions.

The duo - made up of brothers Guy and Howard Lawrence - took to Twitter to confirm the news, posting: "We have been writing/producing some songs on @maryjblige 's forthcoming record with @jimmynapes and @samsmithworld."

We have been writing/producing some songs on @maryjblige 's forthcoming record with @jimmynapes and @samsmithworld http://t.co/ARu15Na8Jx

— Disclosure (@disclosure) September 1, 2014

In a joint interview with Blige for The Guardian, it emerged that as well as Disclosure and Smith, she has also been working with Jimmy Napes on the record.

Napes has previously co-written both Disclosure and Sam's debut albums, with Howard also revealing that their song with Mary will be called Right Now.

He explained: "The track Right Nowstarted with some chords I made on Jimmy Napes' piano.

[related]"We took that and gave it a Disclosure-y feel with some drums that (brother) Guy made. Mary leaves the instrumental side to us and gets much more involved when it comes to writing vocals."

Meanwhile, it was also confirmed that Smith has written four new tunes for the LP, including "doo-wop" track titled Therapy.

The London Sessions is due for release in November.