Turner to come out of retirement for Grammy performance

Tina Turner is coming out of retirement to make her first proper public live performance in eight years at the Grammy Awards.

The 68-year-old supergran will duet with Beyonce Knowles at the awards ceremony next month.

Turner announced her retirement in 2000, but took the stage for a private charity gig at London's National History Museum last May.

Now she'll make a spectacular comeback by performing a currently-unknown song with Knowles at the Los Angeles awards ceremony.

Knowles, 26, is a longterm fan of Turner's and performed her song 'Proud Mary' at a Kennedy Center tribute to the veteran musician in 2005.