Before I'll go on with some german OOP - here a recording from Hungary.
György Szabados is the "father" of hungarian Freejazz. His duo with Anthony Braxton is his most famous recording. This deleted cd captures him in a kind of "Third Stream" setting.
A fine introduction you'll find here:
An excellent trio date with Anthony Braxton and Vladimir Tarasov is available from Leo Records:
His first recording "The Wedding" (Az esküvő) from 1975 is a masterwork.
The title "Homoki Zene" means "Sand Music" and refers to Puszta (hungarian savannah).
Not really clear to me what this is about - but the music!!!
Link in comment.