The 20th century saw the development of the secular Requiem, written for public performance without specific religious observance, such as Max Reger's "Requiem" (1915), the setting of a German poem titled Requiem and dedicated to victims of World War I, and Frederick Delius's "Requiem", completed in 1916 and dedicated to "the memory of all young Artists fallen in the war",; Paul Hindemith's "When Lilacs Last in the Dooryard Bloom'd: A Requiem for Those We Love", commissioned in 1945 (premiered 1946) after the passing of Franklin Delano Roosevelt, and based on Walt Whitman's elegy written after the passing of Abraham Lincoln; and Dmitry Kabalevsky's "Requiem" (Op. 72; 1962), a setting of a poem written by Robert Rozhdestvensky especially for the composition.