question: What piece is often used in the horror genre ?
answer: `` O Fortuna '' of Carl Orff 's Carmina Burana
turker_answer: `` O Fortuna '' , of Carl Orff 's Carmina Burana , is often used in the horror genre .
rule-based: `` O Fortuna '' of Carl Orff 's Carmina Burana is often used in the horror genre .