Complex sentence: His 80th birthday is celebrated in a concert of the Rheingau Musik Festival on 16 August 2010 in Schloss Johannisberg with compositions of five composers including three premieres, works of Kirchner, Rihm, Hosokawa, Lachenmann and Jörg Widmann for clarinet, percussion, piano and saxophone.
Split into simpler sentences: His 80th birthday is celebrated in a concert of the Rheingau Musik Festival on 16 August 2010 in Schloss Johannisberg with compositions of five composers including three premieres. The program features works of Kirchner, Rihm, Hosokawa, Lachenmann and Jörg Widmann for clarinet, percussion, piano and saxophone.