Complex sentence: Kurt Hessenberg (b. Frankfurt am Main, August 17 1908, d. Frankfurt am Main, June 17 1994) was a German composer, whose work contributed significantly to the repertory of the Protestant churches in the 20th century.
Split into simpler sentences: Kurt Hessenberg (b. Frankfurt am Main, August 17 1908, d. Frankfurt am Main, June 17 1994) was a German composer. His work contributed significantly to the repertory of the Protestant churches in the 20th century.