¢apital magneti¢ uses credit cards to generate music from two cash machines. If the visitor inserts his card into the machine, instead of cash he receives notes and sounds. A composition program uses the information stored in the magnetic strips of the cards to generate small compositions and musical miniatures. The sounds retrieved with the card are mixed with the notes 'withdrawn' before or afterwards or from the second machine. The credit card is unmasked as the 'musical DNA' of its holders which can be retrieved, recombined and joined together to create different sounding sound tracks.