Singer Annie Lennox is to perform the theme song for the final instalment of The Lord Of The Rings trilogy.
Lennox carved out a successful solo career in the 1990s
Her song Into The West will feature in The Return Of The King, as well as Howard Shore's score.
"It has been a fascinating experience to be a very small part of this vast jigsaw puzzle entitled The Lord of the Rings," former Eurythmics star said.
The soundtrack is out on 25 November, followed by the film on 17 December.
Lennox enjoyed huge success in The Eurythmics during the 1980s, the band she formed with Dave Stewart.
Their songs included Sweet Dreams, Who's That Girl?, Here Comes the Rain Again and There Must Be an Angel.
Her subsequent solo career also produced hits such as Why?, Little Bird and Walking on Broken Glass from her debut Diva, which won best British album at the 1993 Brit Awards.
Shore has a string of film scores to his name
Lennox has won the best British female award at the Brits six times, the last time in 1996, making her the most celebrated female artist in the ceremony's history.
Canadian composer Howard Shore won an Oscar in 2002 for his work on the first Lord of the Rings film, The Fellowship of the Ring.
He has created more than 60 film scores including those for Silence Of The Lambs, Philadelphia and Panic Room.
Enya wrote two of the songs on the first soundtrack, The Council of Elrond and May It Be.
Music fans voted Lord of the Rings the greatest film soundtrack two years running in an annual poll by radio station Classic FM.
The movie score beat the music from films such as Gladiator and Lawrence of Arabia in this year's poll in August.