Nordheim’s music is meant to be very playful. His Flashing, originally the cadenza of his concerto for accordion and orchestra (Spur), became eventually his most famous work for accordion. The whole composition is based on a very frisky idea: the bouncing of a little ball. Nordheim discovered the stereophonic character of the accordion, from whose sound of the left and the right hand comes from different channels. This stereo sound capacity gave Nordheim the perfect opportunity to create the illusion of a bouncing ball.