On Order. Fire up your Orff ensemble with this hot introduction to the steel band tradition of Trinidad, via Pandemonium, a Wesleyan University-based steel band and one of the best in the US! Pandemonium Rules! features authentic steel band pieces scored for Orff instruments. The authors join forces with Pandemonium Steel Band to bring you the sound, the sense and the excitement of pan for your Orff-based music classroom.