Another gem from Youtube, from a user called Dubwise4u, a Clip from Howard Johnson’s 1982 Channel Four UK six part documentary series “Deep Roots Music (Spread over 3 Discs)“. (parts of it also are available in the UK under another title “Reggae Nashville, Deep Roots”)

“Here is the full version of the dub section with Bunny Lee, Prince Jammy & Scientist doing the “Jailhouse Rock” track. It has a small introduction about King Tubby, and his importance to dub. Right after that Prince Jammy is at the controls, Bunny Lee giving his input and dancing like a madman and Scientist is the dark skinned young man in white with the button hat on and smoking the huge pipe at the end too! :)”