Ruth Underwood 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 Zap

Roxy & Elsewhere is a double live album by Frank Zappa and The Mothers, released on September 10, 1974. Most of the songs were recorded on December 8, 9 and 10, 1973 at The Roxy Theatre in Hollywood,