Ruth Underwood is an American musician best known for playing xylophone, marimba, vibraphone, and other percussion instruments in Frank Zappa and the Mothers of Invention. She collaborated with the Mothers of Invention from 1968 to 1977.
Underwood playing at a Frank Zappa concert, c. 1975
The marimba, is a musical instrument in the percussion family that consists of wooden bars that are struck by mallets. Below each bar is a resonator pipe that amplifies particular harmonics of its sound. Compared to the xylophone, the marimba has a lower range. Typically, the bars of a marimba are arranged chromatically, like the keys of a piano. The marimba is a type of idiophone.
A 5-octave marimba made by Marimba One
An array of named instruments in the Kongo Kingdom by Girolamo Merolla da Sorrento (1692)
Marimba players in Africa
"The Marimba" from "The Capitals of Spanish America" (1888)