For those waiting to find out what songs are going to be in the much-awaited film, the tracklist of the soundtrack has been revealed.

The songs included official soundtrack of this fall's biggest movie has been given light, and Grammy-winning artist Bruno Mars will be the man-in-charge for all of the film's theme songs. The soundtrack includes 15 tracks, with only a couple of songs named to pump up the fans' excitement. One of the songs named on the 15-song soundtrack is Edward and Bella's wedding theme, and fans who saw the 2008 Twilight movie will surely have no difficulty guessing what it is.

Edward and Bella fans will be thrilled to find out that the music accompanying their wedding will be Iron and Wine's "Flightless Bird, American Mouth." The track is the song playing on the background during Edward and Bella's first time dancing. Another revealed track is "It Will Rain," written and sung by Mars specifically for the movie. The single will be available on iTunes on Sept. 27 in the US and on the 31st in the UK.

In an interview with Billboard, Mars has a lot to say about how his creative process was inspired by the string of Twilight movies.

"The 'Twilight' movies for me (are) a love story. But it's a dark love story. And I think the best way to describe the song is: it's the darker side of love. I think that pretty much sums it up. [It] started off with me and the guitar... and I just had this melody in my head and basically laid it down after I saw the film" said Mars in the interview.

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