Halo 2, released in 2004 as the sequel to Bungie's first-person shooter Halo, featured a soundtrack that blended orchestral themes with rock guitar, a shift that helped define the series' sound. The guitar-led passages became instantly recognisable to players and were widely shared in gameplay videos, montages, and remixes after the game's release. Years later, the riff still works as shorthand for epic sci-fi action, which is why editors continue to reuse it for intros, highlights, and nostalgic gaming content.