Not to be confused with Moonlight Sonata. Moonlight Serenade is an American swing ballad composed by Glenn Miller with subsequent lyrics by Mitchell Parish. In 1991, Miller's recording of Moonlight Serenade was inducted into the Grammy Hall of Fame.
Ice's weaknesses are negligible, for the most part, because you won't see much of the three types of Pokmon whose attacks are strong against them: Fighting, Fire, and Rock. Of those that are used, your Ice Pokmon should have little difficulty dealing with them.
Ice is water, frozen into a crystalline structure. When ice melts, it's temperature does not change but the energy absorbed by the molecules increases their motion, making it more likely that those crystalline bonds break, allowing the molecules flow (as liquid state!)