Sextet was by the Polish composer who has completed how many operas?
Krzysztof Penderecki Krzysztof Eugeniusz Penderecki ( ; ] ; born 23 November 1933) is a Polish composer and conductor. "The Guardian" has called him Poland's greatest living composer. Among his best known works are his "Threnody to the Victims of Hiroshima", "Symphony No. 3", "St. Luke Passion", "Polish Requiem", "Anaklasis", "Utrenja", four operas, eight symphonies and other orchestral pieces, a variety of instrumental concertos, choral settings of mainly religious texts, as well as chamber and instrumental works.
List of compositions by Arthur Sullivan The following is a list of musical works by the English composer Arthur Sullivan, best known for his operatic collaborations with W. S. Gilbert. In all, Sullivan's artistic output included 23 operas, 13 major orchestral works, eight choral works and oratorios, two ballets, one song cycle, incidental music to several plays, numerous hymns and other church pieces, and a large body of songs, parlour ballads, part songs, carols, and piano and chamber pieces.