Günter Kochan was a German composer. He studied with Boris Blacher and was a master student for composition with Hanns Eisler. From 1967 until his retirement in 1991, he worked as professor for musical composition at the Hochschule für Musik "Hanns Eisler". He taught master classes in composition at the Academy of Music and the Academy of Arts, Berlin. He was also secretary of the Music Section of the Academy of Arts from 1972 to 1974 and vice-president of the Association of Composers and Musicologists of the GDR from 1977 to 1982. Kochan is one of eleven laureates to have been awarded the National Prize of the GDR four times. In addition, he received composition prizes in the US and Eastern Europe. He became internationally known in particular for his Symphonies as well as the cantata Die Asche von Birkenau (1965) and his Music for Orchestra No. 2 (1987). His versatile oeuvre included orchestral works, chamber music, choral works, mass songs and film music and is situated between socialist realism and avant-garde.

Udo Zimmermann was a German composer, musicologist, opera director, and conductor. He worked as a professor of composition, founded a centre for contemporary music in Dresden, and was director of the Leipzig Opera and the Deutsche Oper Berlin. He directed a contemporary music series for the Bayerischer Rundfunk and a European centre of the arts in Hellerau. His operas, especially Weiße Rose, on a topic he set to music twice, have been performed internationally, and recorded.