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 floats because it is about 9% less dense than liquid water. In other words, ice takes up about 9% more space than water, so a liter of ice weighs less than a liter water.