The Creation (Haydn) of Eve is usually sung by the same soloist who sings Gabriel. This was the practice Haydn followed, but some conductors prefer to cast each of the five roles with a different soloist. The choral singers are employed in a series of monumental choruses, several of them celebrating the end of one particular day of creation. The orchestra often plays alone, notably in the episodes of tone painting: the appearance of the sun, the creation of various beasts, and above all in the overture, the famous depiction of the Chaos before the creation. The oratorio is structured in three parts.
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