|1.||RC Church a Mass celebrated for the dead|
|2.||a musical setting of this Mass|
|3.||any piece of music composed or performed as a memorial to a dead person or persons|
|[C14: from Latin requiēs rest, from the opening of the introit, Requiem aeternam dona eis Rest eternal grant unto them]|
In music, a Mass for one or more dead persons, containing biblical passages and prayers for the admission of the dead to heaven. The term has been loosely applied to other musical compositions in honor of the dead. A German Requiem by Johannes Brahms, for example, uses texts from the Bible but is not a Mass.