Indeed. In particular, when OP said he wasn't moved emotionally by Glass's music, I immediately thought of the track "67 Cities" from Errol Morris documentary, The Fog of War: https://www.youtube.com/watch?v=hOCYcgOnWUM

Glass's score makes this a very powerful scene, IMO.

I only heard about Glass because he was used in this Battlestar Galactica scene. https://www.youtube.com/watch?v=kCrxDsuwXjI