Music for our Teaser trailer

we wanted the music to be scary and include orchestra, this creates a very scary affect.. we searched on youtube and other sites, and the camera women and the director found the perfect track to which we all agreed on, it is called 'Summon the Demons' even the title links with our teaser! this was found on youtube and we needed the track. so i was able to get the track downloaded from youtube and then we were able to listen to it with the trailer and it sounded perfect. :)