The pulsating or vibrating element of some sounds that is produced by a full, resonant quality of tone. Vibrato is a very slight fluctuation of the pitch of a note; it was known as early as the 16th century, but until the 19th century it was used mainly as ornamentation. Since the 19th century, vibrato has been used almost constantly because of its enhancement of tone. vibrating; i.e., a more or less rapidly repeated slight alteration in the pitch of a note, used to give a richer sound and as a means of expression. Often confused with tremolo, which refers either to a similar variation in the volume of a note, or to rapid repetition of a single note.is a technique of vibration used on various instruments and by singers, at one time used sparingly or not at all, but tending to over-use from performers anxious to conceal poor intonation. In strings-even pulsation or rapid vibration of the fingers of the left hand produced by a combination of finger and arm movement.<br><br>To vibrate by slightly altering a pitch higher and lower<br><br>A smooth and repeated changing of the pitch up and down from the regular musical pitch, often done by singers.