You're welcome, all this information is online on the internet, but mainly in Dutch/Flemish, and it maybe interesting for English speaking persons to hear about some history of the accordion education in Flanders.
I can understand it must have been difficult for pianists or PA players when the teaching positions switched from Hubert Kicken (PA) to Roger Eggermont (CBA).
I can confirm Roger Eggermont was very serious about accordion education. While he played only musette on television and in shows, he had special attention to the accordion education in Russia. The first year program in Antwerp was all Russian bayan pieces for the students. This was because his main student, his assistant Ludo Mariën ( who is now the teacher in Antwerp) was all into classical accordion music and adored Russian bayanists. Who didn't, when you attended the recitals...
However, one of my questions was about free bass, and I never got a clear answer, but I think Roger Eggermont didn't either play free bass at all, or only very occasionally. He was not relaxed when I started about free bass education. In general he was a strict teacher, Ludo was present at the interview, but it was Roger Eggermont who answered all the questions. I always had the sense Ludo wanted to tell about the free bass, ... but he still had to pass his exams with Roger Eggermont. So wisely he was silent and listened. I only posed 2 questions directly to Ludo.
So I think Ludo Mariën was in some degree autodidact regarding to free bass.
Years later I talked regularly to Ludo Mariën, but we never really talked about Eggermont. It was all about the Russians, and the development of the accordion in Flanders.
But since 15 years I'm too busy professionally (not related to music) and have no time anymore to go to recitals or conferences. Occasionally I go to an accordion recital.
I would like to have more time to talk to accordion teachers, but alas... time is not on my side...
I was only a student back in 1990/1991, so I had no official influence on layout and accordion education decisions at all, but I had some sort of informal way of talking to teachers. Many knew me as an accordion student.
For me too, the accordion is a hobby, a passion.
The last important thing I want to mention is:
I wrote I had 4 accordion teachers in 2 public music schools. Well ... 2 of them (Thuriot and Flecijn) were C-system players. I started with Flecijn on C-system.
The other 2 were B-system players...
Now you guess what happened... My 2 B-system teachers could not give me any directions at all in fingering problems on C-system. I had to work it out myself.
I had an excellent start with Eddy and Philippe on C-system, but the B-system teachers focussed only on musicality and phrasing.
Simply because they didn't play C-system.
That is the result of the failure of choosing 1 single CBA-layout.
In the first years all went well, the C-system teachers close to France and in the West of Flanders.
The B-system players closer to the East and Germany.
But after a few years, some teachers changed schools, relocated, remarried, etc etc You can't force people to stay in the same region...
Then what you get is a mess. The systems got mixed up all over Flanders....
You see, a single CBA layout system may sound dictatorial and strict.
But the advantage is teachers can switch more easily between schools. Because all would play the same system.
Spain (C-system), France (C-system), Russia (B-system) made better decisions and opted for one single system.