Sensational, I know, I was a witness. And they came in 1970, in their own school in Frankfurt, namely exactly so on .... a sound like a board! Here also, and here's two school fetus - although the second was recorded by Swedish Radio: Fairfield Halls, Croydon and Concerthuiset, Stockholm - after they were previously practicing in Frankfurt. Nevertheless, it should be people that were lost after visiting one of their 70 concerts once and for all to classical string quartet's ...
PS. For something that was forty-four years long as disabled Eight-track recording, the Fairfield concert sounds really amazingly well, after all it was, at all awkward circumstances, taken with the Pye Mobile Recording Studio - and conveys ultimately a deeper insight into how these by their fans so much beloved troupe in their start-up years - also in the studio - ticking ... just different than other bands: ferocious.
PPS. The Stockholm-shots gave it several times already, by the way also by Angel Air - strange publishing policy.