Madonna plans jazz duet

Pop superstar Madonna is planning a duet with African jazz singer Cesaria Evora.

Fans of the 63-year-old Cape Verdan star were surprised to see the Material Girl in the crowd at a concert Evora gave in London recently.

But sources say Madonna is a huge fan and desperate for the pair to collaborate.

An insider reveals: "She's a big admirer of Cesaria's. As far as I know, nothing's been signed yet, but I think they could be singing together soon."

And a spokesperson for Evora's record label BMG admits a duet isn't out of the question: "A collaboration wouldn't surprise me. Cesaria has an immense global following."