Ithaca, New York, United States
Ruth Underwood (born Ruth Komanoff; May 23, 1946) is an American musician best known for playing xylophone, marimba, vibraphone, and other percussion instruments for Frank Zappa and his band The Mothers of Invention. She played for Zappa from 1968 until his death. She married fellow Zappa musician Ian Underwood.

as Fake Drummer

as Self
1997

as Self - Played with Zappa 1967-1976
2020

as Fake Drummer
1971

as Self (archive footage)
2016

as Self
2007

as Self
2021

as Self (archive footage)
1988

as Self
1987

as Herself
2013

as Self
1982

as Herself
2015

as Herself
2014
as Self - Played with Zappa 1967-1976
2020

as Self (percussion)
2025

as Self
2021

as Self - Played with Zappa 1967-1976
2020

as Self (archive footage)
2016

as Herself
2015

as Herself
2014

as Herself
2013
as Self
2010

as Self
2008

as Self
2007

2007

as Herself
2005
as Self (archive footage)
1994

as Self (archive footage)
1988

as Self
1987

as Self
1982

1973

as Fake Drummer
1971