The song starts with a slow choir-and-strings melody, almost the same as the beginning of Halo Reborn, but with a strings melody. The vibrato used by the strings section is very prominent in this section. It is similar to the song Under Cover of Night. The motif continues, and at 0:55 seconds, changes to a more gloomy and strange tone. This continues until 1:41 seconds, when drums start beating. This leads to the start of the Halo 3-version of the Halo Theme from the Halo 3 E3 2007 Trailer. This could be considered the "turning point" of the song. In game, the song loops between three sections: the beginning of the Halo theme, the violin section of the theme and the piano section from Three Gates. It then transits to a version of One Final Effort's second half, reinforced with choir. At 4: