Exactly 50 years after his disappearance at sea, the Hamburger Kunsthalle is organizing a retrospective exhibition of the fascinating work of Dutch artist Bas Jan Ader (1942-1975). He is considered a key figure for subsequent generations of artists - a so-called "artists' artist". Legendary among artists, his 16mm films, slide installations, photographs and videos, together with early works shown for the first time and documentary material, can now be discovered by a large audience in a rare and comprehensive retrospective. Bas Jan Ader's artistic work is at once melancholic and absurd, emotional and conceptual, simple and complex.