Michael Vetter

He inspired composers such as Louis Andriessen, and Rob du Bois in the Netherlands, Sylvano Bussotti in Italy, and Mauricio Kagel and Karlheinz Stockhausen in Germany to use the instrument in their compositions.

[4] From March to September 1970, together with nineteen other musicians, he performed works by Stockhausen (including Hymnen, Spiral, Pole, and Aus den sieben Tagen ) in the spherical auditorium of the German Pavilion at Expo '70 in Osaka, Japan.

During this period he performed what he called "structural theatre" and in 1981 published a collection of writings on "experimental Zen arts" in a book titled Shijima no oto [The Sound of Silence].

[1] Vetter's early interest in graphically notated music turned to purely visual expression during his time in Japan, with works such as the ink-brush paintings in The Book of Signs, his 120 colour etched monotypes titled Strukturelle Mandalas and Zweistimmige Inventionen (Two-part Inventions), and the Codex Aureum (Gold-Violet Dialogue between Intention and Chance).

Later works, executed after his return to Germany, include a series of panel paintings as entrances and views, titled Symphonies, Duets, Trios, Quartets, Der Kreuzweg des Lichtes, Wolkenbilder, and Die Gesetzestafeln.