Audio and video recordings featuring music and artistic performances; Audio recordings featuring musical information; Computer hardware and software for processing digital music files; Computer programs for processing digital music files; Computer software and firmware for collaboration on music; Computer software featuring musical sound recordings and musical video recordings; Computer software for creating and editing music and sounds; Computer software for processing digital music files; Digital music downloadable from the Internet; Digital music system that synchronizes digital music files stored on a home unit and a car unit; Digital music systems that synchronizes digital radio files stored on a home unit, a car unit, or portable unit and that may be backed up to an internet depository; Downloadable music files; Downloadable musical sound recordings; Electrical cables for musical instruments; Electrical pickups for use with musical instruments; Electrical voice intracommunications systems comprising control stations, interface modules, frames, controller cards, connectors, power supplies, panels and mountings for use in the production of live musical performances, theatre, and other live events; Machine readable computer programs for use in the reproduction of music; Music-composition software; Musical instrument adaptors; Musical instrument amplifiers; Musical instrument connectors; Musical recordings; Musical sound recordings; Musical video recordings; Sound recordings featuring music