Marbles in a Bag

Either a small sackcloth bag or a bank cash bag is the perfect container for this percussion effect. Using marbles in music is as old as something fairly old and the action of pushing two marbles together to get that bwooowing sort of sound is used extensively in feature films. The marbles in a bag effect is a very versatile sound but care must be taken not to allow ball-bearings to infiltrate the bag as the marbles would not be able to cope.