The Last Spartan is similar in composition to the Halo Theme, and indeed could be said to be the theme of Halo 2. As the name suggests, the song is the theme of the John-117, the eponymous last SPARTAN-II.
The music appears on the Halo 2 main menu, and is first played in the campaign during the cinematic at the end of Cairo Station. The song was also used in the first trailer for Halo 2, which shares many similarities with the cinematic in which it was eventually used. The vocal chorus that closes the track was used as the opening music for the main menu, in the same way that the chant at the start of the Halo Theme was used during the main menu of Halo: Combat Evolved. The chorus was repeated later, notably in Ghosts of Reach. Other elements of the piece were also later used in other parts of the soundtrack, such as a soft string variation at the start of the Mombasa Suite. Furthermore, part of The Last Spartan is played during the final moments of the campaign's last cinematic, and thus is the music that concludes the story of Halo 2.
- It should be noted that, even though the song is called "The Last Spartan" and is referring to John-117, he is not the last Spartan. Grey Team and the Spartans in the Shield World of Onyx remain. It likely named so as John-117 is the last known Spartan.
- The track from the Halo 3: Original Soundtrack used in the Halo 3 Announcement Trailer, "Finish the Fight", uses elements from "The Last Spartan".