What is the opera song with a choir used for horror movies?

One of the most iconic opera pieces used in horror movies is not specifically an opera song but rather a choral piece that evokes a sense of horror: "Ave Satani" from The Omen (1976) by Jerry Goldsmith. This piece is heavily influenced by Carl Orff's "Carmina Burana" and is used to convey a dark, ominous atmosphere, fitting for horror themes1.

Another piece often associated with horror and suspense is the "Dies Irae", a Gregorian chant that has been incorporated into various classical works, such as Mozart's Requiem and Verdi's Messa da Requiem. It is frequently used in films to create a sense of dread or foreboding4.

In terms of opera pieces used in films, "Ride of the Valkyries" from Wagner's Die Walküre is famous for its use in Apocalypse Now, though it's not typically classified as horror2. However, its dramatic and intense nature can contribute to a chilling atmosphere in certain contexts.

For a more traditional opera piece, "Nessun dorma" from Puccini's Turandot was used in The Witches of Eastwick, but it is not typically associated with horror movies2.

In summary, while there isn't a specific opera song with a choir exclusively used for horror movies, "Ave Satani" and the "Dies Irae" are notable examples of choral music used to create a horror atmosphere.