There is a major bug where music themes in Halo 1 tend to over lap and loop over eachother. I played through the Maw on legendary listening to the same track Yawning Chasm for the entirety of the map, it even played over the Warthog run, however it was drowned out significantly. It completely ruins the silence at the very end too.
This glitch happens all over the Campaign, but happens far to much on the last level of the game, it completely takes me out of the experience. I am concerned that it will kill the impact for new players when they finish the last level.
This has been an issue since the Original Anniversary edition as well, and I think it’s one of the worst bugs in all of Halo 1.