Giuseppe sort of have to laugh, but the Italian composer's name roughly translates into English as Joe Green.  "Dies Irae" (Day Of Wrath) is one of those amazingly powerful pieces of music. It's often been used on TV and film soundtracks. It's in that same musical vein as Carl Orff's "O! Fortuna" from "Carmina Burana" or Richard Strauss' "Also Sprach Zarathrustra".