Sergei Mikhailovich Slonimsky (born in 1932) is one of the leading composers belonging to the modern Russian music, the author of works in different genres, from operas and symphonies to cinema sound-tracks.
The Requiem dates 2003. This grand canvas is distinct from the numerous similar compositions of this genre. It happens because of the text order, which is changed in comparison with the canonic ecclesiastic one. The music history witnessed the cases of this genre's (established in the 14th century) free interpretation. Remember the requiems by Ockeghem, Orlando Lasso and their contemporaries. Not all the Roman canon's movements are present in those works. Gabriel Faure omitted ''Dies irae'' in the 19th century, while Benjamin Britten amalgamated canonic Latin texts with the English verses in his ''War Requiem'' dating the 20th century. The Requiem's German tradition allows to resort to the Lutheran Bible's verses instead of the Latin ones.
You can listen to the music here:
http://www.youtube.com/watch? v=Q6YiGcMIhWk

It took rather a long time to make the Requiem independent of the church service. Now it's affirmed as the mere musical genre.
Slonimsky's Requiem is not initially implied as the part of some ritual. Lofty thoughts, repentance, the prayer of sins' redemption. The composer sets himself free of the canonic textual disposition, marking the most vital shades of meaning, which emotional kernel looks extremely burning for his mind.

Contents:

I. LACRIMOSA
II. DIES IRAE
III. REQUIEM AETERNAM
IV. LUX AETERNA
V. TUBA MIRUM
VI. AGNUS DEI
VII. REX TREMENDAE MAJESTATIS
VIII. DOMINE JESU
IX. HOSTIAS
X. SANCTUS
XI. BENEDICTUS
XII. LIBERA ME
XIII. KYRIE ELEISON
XIV. LACRIMOSA