@ Warren - In typical remix fashion they provided stems but in this case they were all orchestral; melodic strings & horns, percussion, bells and plucked strings. They required that you actually use all of them, with the option of adding other instruments (which I did). And it was set against film, likely a battle scene or similar (the percussion is what I would call "war drums"). But so long as it sounded somewhat "Halloweeny" I'm good, 'cause that was the idea!
@ Heywood - thanks! I had a lot of fun doing this, taking a purely orchestral piece and rocking/modernizing it a bit. Good to know it gave you the proper mental visuals.