The pair have teamed up for new single 'It All Belongs To Me', which serves as their first duet since 1998's 'The Boy Is Mine'.The song was produced by Rico Love and will feature on the stars' respective new albums, which are Monica's New Life and Brandy's 2/11.'It All Belongs To Me' is based around two failed relationships and the act of separating their possessions following the split.Lyrics include: "I know you mad, can't take no more, but put that back, that ain't yours. Have a fit, slam the door but leave them bags on the floor. That s**t belongs to me."'It All Belongs To Me' will be officially released on April 9.