Born 1954 in Vienna. University of Music in Vienna, M.A. of arts in Composing (F.Cerha), Orchestra-Conducting (O.Suitner), and Musical Pedagogics.
1979 – 1981 appointed teacher at the University of Music in Vienna.
Since 1981 freelance composer, many international first performances.
1983 co-initiator of the Viennese Summer Seminars for modern music.
Since 2000 lecturer for Music Theory and Composition at Prayner-Conservatory, Vienna. Since 2006 lecturer at Intercultural Seminar Microtones (with special Keyboard of Hans-André Stamm, 48 tones pro octave), students from China, Japan, Korea, Kroatia, Spain, Austria. Microtonal concerts in Vienna and Salzburg, CDs, TV-transmission in Japan. 2008 Book “Option Microtones” (in German language). Conductor of Classical concerts with own first performances.
Soyka got many awards for his compositions. He wrote operas, concertos for piano and orchestra, for violin, for two violins, for viola, for flute, for saxophone, for violoncello, for percussion, for organ; ballet music, choral and chamber music, songs e.g.
Most of them were performed and broadcasted, in Australia, Azerbaijan, Bulgaria, Brasilia, Côte d Yvoire, Czech Republic, Denmark, France, Germany, Great Britain, Hungary, Italy, Japan, Kroatia, Kuba, Norway, Poland, Romania, Sweden, Slowakia, USA, Austria (Mozarteum Salzburg, Vienna Festival, Musikverein, Hofmusikkapelle, Schloß Belvedere usw.) e.g.
Soyka wrote numerous ordered compositions for music-organisers and festivals, f.e. Azerbaijan (Baku Arts-Centre and Philharmony), Klagenfurt and Amstetten (stages), Vienna, Göppingen (municipals), Genova (Italy), Györ (Hungary), Salzburg, Sofia (Bulgaria), Vilnius (Lithuania) , for radio, for records, TV e.g. Many microtonal compositions.
Works written by Ulf-Diether Soyka are registered at the Austrian Music Information Centre (www.mica.at). Publishers: Noetzel-Musiverlag, KKM-records, Traunmusik, Wiener Waldhornverlag INOEK-Edition, Copy-us e.g.