Belgium, children and harmonicas

Factual Questions
1

Is it true that every child in Belgium is required by law to take harmonica lessons? If not, is there any law that might make someone assume this?

2

Eh, it’s apparently one of those Trivial Pursuit-type Web factoids that are widely repeated word for word.

http://www.heritagehawks.org/talon/spring02/

My guess is going to be that while American schools teach the recorder in Music class to first, second, and third graders, Belgian schools teach the harmonica.

3

For what it’s worth, the great jazz harmonica player (harmonicist?) Toots Thielmans is Belgian. Is there a strong link between Belgium and harmonicas?