Terry bozzio (drums, background vocals) Davey moire (vocals) Andre lewis (organ, vocals) Roy estrada (bass, vocals) Dave parlato (bass) Napoleon murphy brock (saxophone, vocals) Ruth underwood (synthesizer, marimba) Donnie vliet (harmonica) Louanne neil (harp) Ruben ladron de guevara (background vocals) Sharkie barker (background vocals) (instrumental)
https://primanota.net/frank-zappa/black-napkins-chords.htm