Vibrato is a musical technique used by singers and instrumentalists to create a slight, rapid variation in pitch. This effect adds warmth and expressiveness to the sound, making it more engaging for listeners. Vibrato is typically produced by oscillating the pitch of a note, usually within a range of a half-step or whole step. In vocal music, vibrato is often developed through proper breath control and relaxation of the vocal cords. It can also be found in instruments like the violin and guitar, where players use techniques such as finger movement or bending strings to achieve a similar effect.