The music of the life, water, air and earth faiths is especially good. I cannot convert into words my liking and appreciation for the game. I say it again - it is the best game ever. The gameplay is fantastic. Each faith has its unique strengths and weaknesses.
Death has everything except for healing spells.
Order is well balanced in all respects. It is the only faith that can convert water to land and has the best ships and sea creatures. Earth has the strongest warriors in the game and good spells but relatively weak archers. Air has a balanced troop and has more flying creatures. This is further enhanced with exploration of the map, management of resources and real time combat.