The Creation structure but may be written by an unknown author. Back in Vienna, Haydn passed it to his friend and sponsor Baron Gottfried van Swieten, who translated and organized it. The sources for the libretto are the two Creation narratives from the Book of Genesis, some Psalms, and John Milton's "Paradise Lost", an epic poem in ten volumes, first published in 1667. The libretto is structured in three parts, the first dealing with the Creation of the universe and the plants, the second with the Creation of the animals, and of man and woman, and the third with Adam and Eve in
Music for the Requiem Mass the actual Roman Catholic liturgy, are often composed as one movement. Musico-thematic relationships among movements within a Requiem can be found as well. Beginning in the 18th century and continuing through the 19th, many composers wrote what are effectively concert works, which by virtue of employing forces too large, or lasting such a considerable duration, prevent them being readily used in an ordinary funeral service; the requiems of Gossec, Berlioz, Verdi, and Dvořák are essentially dramatic concert oratorios. A counter-reaction to this tendency came from the Cecilian movement, which recommended restrained accompaniment for liturgical music, and frowned upon the use