Rainer Riehn (12 November 1941 – 9 June 2015[1]) was a German composer and conductor, and a co-editor of music theory magazines.
Riehn was born in Danzig, Germany (modern Gdańsk, Poland) studied music theory in Mainz, Zürich, and Berlin and composition with Gottfried Michael Koenig in Utrecht.
[2] He met the music theorist Heinz-Klaus Metzger at the Darmstädter Ferienkurse in the summer of 1965.
[1] In 1968 he founded the Ensemble Musica Negativa,[3] in 1977 the series Musik-Konzepte, which he published until 2003 (together with Heinz-Klaus Metzger).
[1] In 1987 he was chief dramaturge at the Oper Frankfurt together with Heinz-Klaus Metzger,[4] and initiated the first commission for an opera composition for John Cage (Europeras 1 & 2).