The Gregorian requiem -- The polyphonic Corsican requiem -- The Renaissance and the Franco-Flemish school -- The high Renaissance -- The Baroque requiem -- The symphonic requiem -- Romanticism -- The twentieth century -- Dies irae -- Ein Deutsches Requiem : the German requiem -- The Anglican requiem -- The Byzantine-Greek requiem -- The Russian Orthodox panikhida -- The Serbian Orthodox requiem : Opelo -- The Armenian Orthodox requiem.