Ralph Humphrey: Drum Solo with Frank Zappa
Mothers Of Invention: Frank Zappa—guitar, vocals - Tom Fowler—bass Bruce Fowler—trombone
Jean-Luc Ponty—violin Ian Underwood—woodwinds, synthesizer - George Duke—keyboards
Ruth Underwood—percussion - Ralph Humphrey—drums
from Solliden Skansen Stockholm Sweden - August 21, 1973