Ryan Adams and N.E.R.D’s PHARRELL WILLIAMS are writing with JAMIE CULLUM for his new album.

The jazz-pianist is also working with former Robbie Williams’ collaborator Guy Chambers and [a][/a] on the follow-up to ’Twentysomething’.

Cullum surprised festival crowds last year with his cover of the Pharrell-penned track ’Frontin’.

Further details about the as-yet-untitled album are expected to be revealed shortly.