Hi Tom,
The sad thing is that here in western Europe these days, any accordion music heard in the media is usually of the French variety. Accordion music from other countries just doesn't get much airing at all. There have been one or two Italian TV documentaries over the last 20 years or so regarding the accordion, but they have mainly concentrated on the music relating to the mainland.
I discovered this player when I was looking for an example of the old tune "Luci e Ombre", and decided I liked his playing style.
In my navy days I spent a bit of time on the nearby island of Malta, which has fairly close ties with Sicily and Libya in North Africa, but the Italian influenced accordion music tended to be a bit formal there, and I wasn't too keen on it.
I do remember a raised eyebrow or two when a former work colleague of mine, whose wife was Sicilian, brought a home cooked meal to have on his break. It was a spicy couscous dish, and he had to explain how close Sicily was to North Africa. I've never been to Sicily, but if the accordion music is like that I might just end up there some time.