I can't put lots of links to these pieces of music or my post will be delayed by the moderators, but if you paste the titles into youtube you will be able to hear the music there. Grieg Peer Gynt Suite No. 1, Op. 46: IV. In the Hall of the Mountain King Stravinsky The Rite of Spring, 1. The Adoration of the Earth, Dances of the Young Girls or this version Fantasia 1940 - The Rite of Spring - Part 1: Genesis Night on Bald mountain Mussorgsky or this version Fantasia - Night on Bald Mountain These will all give you exciting music for when the evil spirits come out of the box.