This song is used in a sort of old commercial for Six Flags to show how scary the roller coasters are. It's been used in tons of movies, and on a few movie trailers but FOR THE LIFE OF ME I CANNOT FIGURE IT OUT!!!
Anywho, it's this haunting opera chorus that's like screaming the words. And it's NOT O FORTUNA!, I am POSITIVE it is not O Fortuna!. People have been trying to figure this out FOREVER on this site but they cannot properly describe it, and I am having a difficult time trying, too. It was used on an ad for Cartoon Network's Theatre for "Scooby Doo Meets the Boo Brothers." In the song, the chorus sings two notes, the first higher than the second, and then repeats this twice. After they sing these six note (high note, lower note, high note, lower note, high note, lower note) as I have said they sing three notes ascending in pitch. So it sounds some what like this: high note, lower note, high note, lower note, high note, lower note, note, higher note, higher note. And the notes are accentuated like this: FIRST second THIRD fourth FIFTH sixth, etc. I HOPE THIS RIDICULOUS EXPLANATION HELPS... It would help me and many others. BUT I AM POSITIVE, POSITIVE, POSITIVE, it is not O Fortuna, which is also a great piece. This unknown one that I speak of definitely has the creepier edge, though.