The Swiss artist Dieter Roth (1930-1998) combines in his work such diverse media as literature, drawing, assemblage, installation, prints, book art, performance and new media. Less well known are his music-related works, which have be shown extensively for the first time in an exhibition at the Kunsthaus Zug in 2014 ("Und weg mit den Minuten" - Dieter Roth und die Musik, 6.9.2014-11.1.2015) and in 2015 at the Hamburger Bahnhof Berlin.
This website (mostly in german) provides extensive documentary material on the exhibitions, accompanying events and collects a huge amount of hitherto unpublished sources and (acoustic) art works. Especially remarkable is a series of oral history videos (more than 20 hours of material) with Dieter Roth's co-workers and musical fellows (such as Hermann Nitsch, Günter Brus, Gerhard Rühm, Oswald Wiener a.o.) under the subtitle Materialien/"Selten gehörte Gespräche".