If you only know one Gunter Hampel record, it's probably Heartplants (1965), the one with Jeanne Lee floating her voice over his vibraphone like they'd been playing together for years, which by that point they basically had. That album is a good entry point because it shows what made Hampel different from a lot of the free jazz coming out of Germany and Holland in the mid-60s — he wasn't just interested in noise and density, he had a real feel for space and melody even when the rhythm section was falling apart on purpose.

Hampel came up in Göttingen, playing clarinet and piano before he landed on vibraphone as his main voice, and that choice mattered. The vibraphone doesn't shout. It rings and decays, and Hampel used that quality to carve out room in otherwise chaotic ensembles. He'd move to bass clarinet or flute depending on what the music needed, which made him less a soloist with a signature sound and more a bandleader who thought in terms of color and texture across a whole group.

He didn't wait around for American labels to notice him either. In 1969 he started Birth Records, one of the first musician-run labels in Europe, and used it to document his own groups for decades — a smart move at a time when a lot of his peers were depending on whichever producer happened to be in town. That label is also where you can trace his long partnership with Jeanne Lee, who became his musical and life partner, and whose voice shows up as another instrument in the ensemble rather than a singer out front with a band behind her.

He crossed paths early with players who'd go on to bigger reputations — a young Anthony Braxton passed through his orbit, as did Willem Breuker and Marion Brown — but Hampel never became a footnote in anyone else's story. He kept building his own bands, his own label, his own version of what European free improvisation could sound like, right up until his death in 2016. He wasn't chasing the spotlight that went to the Chicago or New York scenes. He just kept working, which in the end is its own kind of statement.