Bruno Mars revealed on his website that he has recorded a new song called 'It Will Rain' for the upcoming 'Twilight' soundtrack.

The pop crooner's song is the first to be confirmed for 'The Twilight Saga: Breaking Dawn - Part 1 Original Motion Picture Soundtrack.'

We're not sure what the track will sound like, but the song title and single artwork suggest it might be a sad song.

The image depicts a silhouette of Mars slumped in a chair with a bottle in one hand and an umbrella in the other. The song title appears in large black text atop a swirl of orange and yellow shades.

'It Will Rain' premieres on Mars' website on Tuesday, Sept. 27 and will be available for purchase on iTunes on the same day. Mars hopes the song will follow in the footsteps of his debut album's three Top 5 hits, 'Just the Way You Are,' 'Grenade' and 'The Lazy Song.'

The 'Twilight' soundtrack album drops on Nov. 8, 10 days before the theatrical release of the latest film in the series, starring Kristen Stewart, Robert Pattinson and Taylor Lautner.