"Black Napkins", one of several guitar-driven pieces on Zoot Allures, began life accompanied by themes that would later make up "Sleep Dirt". The performance heard on the album was culled from Zappa's February 3, 1976 performance in Osaka, Japan, though it was edited for the official release.
Along with "Zoot Allures" and "The Torture Never Stops", "Black Napkins" became a signature piece for Zappa, featuring heavily in nearly every subsequent tour and several official releases.
