Finger vibrato
From Wikipedia, the free encyclopedia
Finger vibrato is vibrato produced on a string instrument by cyclic hand movements. Despite the name, normally the entire hand moves, and sometimes the entire upper arm.
There are three types of violin vibrato: finger, wrist, and full-arm. In finger vibrato, the performer only moves his/her fingers; in full-arm, the performer pulls his/her arm back and forth on the violin but only minimally changes his/her finger's position, creating a change of tone. With a guitar, vibrato is achieved by twisting the wrist rapidly to bend the note slightly, moving to and from the root note. Finger vibrato is also a standard part of clavichord technique, known as bebung.
Throughout the 20th century, finger vibrato was normally used in playing all members of the violin family unless otherwise indicated. Toward the end of the century, playing without vibrato became a more accepted technique.
In contemporary music, finger vibrato is also routinely used by classical guitarists on longer notes, to create an impression of a longer sustain. The technique is also used by jazz bassists to add depth of tone.
Until the second half of the 20th century, the clavichord was the only keyboard instrument on which finger vibrato was possible. However, this technique may also be used on pressure sensitive electronic keyboards with appropriate sounds and patches. For example, the Rodgers digital church organs may be provided with an optional voice for the upper keyboard which provides a solo trumpet with velocity-sensitive volume and pressure-sensitive pitch, allowing a skilled player to play a very realistic trumpet solo.

