The rapper-producer is understood to have wanted the married couple to both feature on an as-yet-untitled song.

"Jay and Dre have recorded their verses with the chorus left open for Beyoncé to sing,” a source told The Sun.

Jay-Z and Beyonce last worked together on the 2007 single, 'Hollywood'. They also released the song 'Crazy In Love'.

'Detox', which is the follow-up to 1999's '2001', is due out later this spring, but has yet to be given an official release date.

The first single, 'I Need A Doctor' featuring Eminem, was released earlier this year.

(by Jason Gregory)