Christina Aguilerahas revealed that she has recorded a song for the soundtrack of The Hunger Games: Catching Fire.
The pop star - who has just returned to work as a coach on The Voice USA - broke the news about the song, called We Remain, to fans on social networking site Twitter.
She said: "Love the underlying message of @TheHungerGames. 'We Remain' is special new song, its message to my fans & how I connect w/ the movie, alike."
Coldplay and The National are among the other acts appearing on the soundtrack of the movie sequel, which arrives in cinemas this November.
[uuid=577aa6ba-80f5-4e74-af35-5ab2d21a870d]Two new cast members[/uuid] were revealed for the third instalment of the franchise earlier this week.