Patent 7758427 was granted and assigned to Harmonix on July, 2010 by the United States Patent and Trademark Office.
A method for providing real-time musical interaction among a plurality of players connected via a network includes the steps of receiving input from a local player representing a musical performance, generating audio output responsive to the received input, receiving second music performance data from a remote player representing a musical performance by the remote player, creating emulation data representing the remote musical performance, and using the emulation data to generate a local approximation of the remote musical performance.