Tangerine Dream performed on this day in 1975 at the Olympia Hall in London, England.
This penultimate stop on Tangerine Dream’s 1975 UK Tour was actually not a concert so much as an exhibition gig. They performed a fourteen-minute improvised piece, much shorter than their usual sets, after which they did a demonstration of the mellotron.
Both portions of this set were recorded, and are in circulation online.