Abstract: A system for providing an audio and visual music composition including a composition server accessible to at least one user via a communications network, at least one instrument database accessible by the server including a plurality of musical instruments, a user interface generated by software executing on the server, the user interface including a backdrop and an instrument palette for selecting at least one of the musical instruments, software executing on the server for receiving at least one curve on the backdrop from the user, the curve indicative of at least one frequency of the musical instrument, and a player for outputting a dynamic audio and visual representation of the at least one curve.