Most Halo fans are intimately familiar with the work of Marty O'Donnell, longtime composer for the series, but you may not be aware of the level of work that goes into each and every sound in Halo: Reach. In a new video put together by SoundWorks Collection, O'Donnell and two of Reach's sound designers, C. Paul Johnson and Jay Weinland, discuss the effort behind the soundscape of the game (containing over 60,000 audio assets). Watch the video after the break to see just how deep the sound design is, even for something as simple as a grenade explosion.

[Thanks, Christian]

This article was originally published on Joystiq.