 The track " Fallen " , originally titled " Jupiter " , was the first to be produced for the album . Thirty Seconds to Mars initially thought to exclude the track from the record since they were not satisfied with it , but then they decided to rework the song because there were people that had strong feelings about it . The track features programming by Danny Lohner and background vocals by Maynard James Keenan . Several musicians , including Elijah Blue Allman , Renn Hawkey , as well as producers Ezrin and Virtue , contributed on selected tracks . 
