Mr. Vulture and memories of reconciliation

Of the many events I had the pleasance of organising together with the employees of the cultural centre in years, as they now say, "justly past", there are only a fewer left in my memory. I wonder how it happens that I do not remember, for example, Czesław Niemen's concert, and I remember well the performances of Bulgarian singers, Krasymira Minawa and Margaret Nikolawa. I don't remember much about the large concert...