Having good knowledge of a subject doesn't make you a good teacher of the subject.
Someone around here previously mentioned Michael van der Bos and his work on AoW3. I liked said pieces, but I think there is a gap between music meant for a strategy game and atmospheric music meant for an RPG. Could the artist pass that gap? I don't know, but he'd be my choice if he could.
Unless otherwise specified, just an opinion or simple curiosity.