Gheorghe, your post recalls the Trad v. Modern war that raged in this country in those days, and which I am sure has already been well described on Organissimo.
So I'll just mention one incident. When Humphrey Lyttelton, who was moving stylistically towards Kansas City, added altoist Bruce Turner to his lineup, a group of trad fans stood up in a concert (in Birmingham, I think) and displayed a banner that read GO HOME DIRTY BOPPER! 😀