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He is generally credited with having invented the art of solmization, the introduction of the staff, the use of the hand for teaching intervals, and the introduction of notes.— A Popular History of the Art of Music From the Earliest Times Until the Present
(which were simply a series of notes forming a little melody sung to two or three words), the voice was rarely called upon to progress more than the interval of a sixth, and so this solmization, as the new system was called, was very valuable; for one had only to give the pitch, and _ut_ always meant the keynote, _re_ the second, _mi_ the third, etc., etc. In time— Critical and Historical Essays Lectures delivered at Columbia University

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