Cornelis Hazevoet
... that after pioneering free jazz in the Netherlands during the 1960s, Cornelis Hazevoet gave up music to study zoology in 1980?
... that after pioneering <a href="./Free_jazz" id="mwAhA" rel="mw:WikiLink" title="Free jazz">free jazz</a> in the Netherlands during the 1960s, <b id="mwAhE"><a href="./Cornelis_Hazevoet" id="mwAhI" rel="mw:WikiLink" title="Cornelis Hazevoet">Cornelis Hazevoet</a></b> gave up music to study zoology in 1980?