'Cum sancto spiritu' Johann Sebastian Bach Download ''Cum sancto spiritu'' on iTunes
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Scary Classical Music: Listen to 15 frightening pieces
What better setting for some seriously scary music than the Dies Irae, or 'Day of Wrath?' Verdi's Requiem is an epic achievement in every sense, but this depiction of the day of judgement is pretty unsettling stuff. Turn it up loud.