There is provided herein a system and method for generating music on multiple cell phones or other mobile computing devices, wherein two or more users (to include a user and a computer) acting together may create a joint musical work. The instant methods enable multiple users to create music in a synchronized fashion by using their cell phones or other portable electronic devices as musical instruments. The instant invention has been made possible because of the enhanced processor power within mobile electronic devices and has the potential to create added value in such devices by assisting users in exploiting multimedia features of their cell phones.