"Black Market Clash" was released only in the US and Canada as a 10" record between the releases of "London Calling" and "Sandinista!" It compiled recordings which were then unavailable in the US except as imports. "The Prisoner," the cover of "Pressure Drop" by Toots And The Maytals, "City Of The Dead" and "Armagideon Time" had all been UK B-sides from the period of '77-'79, respectively, of "White Man In Hammersmith Palais," "English Civil War," "Complete Control" and "London Calling." "Pressure Drop" is presented here in a remix by Bill Price.