The requiem, which takes its name from the first word of the Latin Introitus (entrance text), “Requiem aeternam dona eis” (“Give them eternal rest”), is the Catholic Mass of the Dead (Latin missa pro defunctis). Following the liturgical reform introduced by the Council of Trent (1545-1563), the full mass comprised nine musical sections: Introit (Introitus: “Requiem aeternam”); Kyrie eleison; Gradual (Graduale: “Requiem aeternam”); Tract (Tractus: “Absolve, Domine”); Sequence (Sequentia: “…