The reason for this concert taking place in Koblenz was a strong Influence of Jazzpromotor "Hans RoΓbach as local hero. Later he organized concerts with Bill Evans, Art Blakey, Chet Baker , The Woody Herman big band a.o. in our Jazz club for a smaller audience in the 1970s.
These were the days. Long gone and Mr. RoΓbach too. FYI here are 2 fotos. The upper one might be made at the concert day.