Great atmosphere, inspired music
Frank Klepacki is one of my favourite game composers. Admittedly, I prefer his music pre-С&C era (Kyrandia 1, Kyrandia 2, Dune 2, Lands of Lore, Eye of the Beholder 2), but there is something about the first Command and Conquer soundtrack that sticks out among his later (very professional) works. I think, he managed to convey the atmosphere of the game perfectly: the danger and dirt and sand, the industrialized desolation of a dying planet, the heat of battle and the calm moments of war. It's all there. I think Klepacki lost a bit of this mood and feeling in his later works.