What, exactly, is the Dies Irae motif? I've learned that it was from a "Latin Requiem Mass" and that Rachmaninov was apparently obsessed with it, and has been used by a lot of people like Berlioz and Saint-Saƫns, among others... But what is it? When ever I listened to a Requiem, I never picked up on any similarities in the motif, like Verdi, Mozart, Faure, etc... Tim