This studio session was recorded at the Fernseh Allianz studio in Hamburg, Germany in 1970 but only came to light in the late 90's where it was released in the UK only. The 4 track movie can only be played on a PC and not on a DVD player but obviously, it plays as a normal CD in any CD player.
Officially released only as video on the BLACK BOX bonus DVD (2004 Warner/Rhino).