The voice of B5 is done by Haley, our script-person on the set.

Re: the theme music...to me, one is neither worse nor better than the
other. They're *different*, and meant to convey different moods and themes.
Each year it'll change. This year was heavy on strings and brass; next year
it'll be heavy on percussion. The main theme will be reinterpreted and
interpolated in different ways. In the B5 universe, change is the only
constant.