The Requiem Mass is notable for the large number of musical compositions that it has inspired, including settings by Mozart, Verdi, Bruckner, Dvořák, Fauré and Duruflé. Originally, such compositions were meant to be performed in liturgical service, with monophonic chant. Eventually the dramatic character of the text began to appeal to composers to an extent that they made the requiem a genre of its own, and the compositions of composers such as Verdi are essentially concert pieces rather than liturgical works.

Common texts
The following are the texts that have been set to music. Note that the Libera Me and the In Paradisum are not part of the text of the Catholic Mass for the Dead itself, but a part of the burial rite that immediately follows. In Paradisum was traditionally said or sung as the body left the church, and the Libera Me is said/sung at the burial site before interment. These became included in musical settings of the Requiem in the 19th century as composers began to treat the form more liberally.

Source: Music for the Requiem Mass