The individual who lacks the use of his voice as a musical instrument lacks the natural, fundamental medium of musical expression. Not only does he lack the means for the closest and most direct relationship with music, but also there is a serious danger that, as a result, his whole range of musical appreciation will be impaired and finally obliterated. This is likely to occur because he does not have at his command and under his control this power which he so definitely needs. Children who are thus handicapped are often designated by the use of the word monotone.