Hmmm...
A 9-minute composition. Isn't there a particular part of this used for Halloween. Can't be the whole 9-minute deal, right?
Sure.
Fantasia Night on Bald Mountain/Ave Maria
I only remember hearing the first minute or two of it in anything related to Halloween. And now that I think of it, wanna hear something realllllllyyy scary? https://www.youtube.com/watch?v=ZH4WU6aGW6Y