Low brass will rattle your bones if the musician pushes enough air. It's basically the sound of reality ripping in half.
...we need some symphonic metal that highlights full-power low brass - like it's literally the most metal sound an instrument can make. I mean, guitars are great and all, but BWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!
Oh FUCK YES! 2:06 and on is exactly what I'm talking about - you don't hear that in a classical setting super often, but when they really just empty their lungs into those things things, the sound it makes is incredible.
That would have been fucking awesome to see/hear/feel in concert.