Apparatus and equipment for recording, transmission or reproduction of sound, sound effects and/or images, namely amplifiers, loudspeakers, microphones and microphone stands, audio and video mixers, audio and video mixer amps, audio monitors for sound reproduction, audio headsets, data processors, microphone transducers, synthesizers, midi file players, audio cassette track sequencers; software for musical composition, arranging and transposition; software for use in the teaching of musical instruments and music theory; metronomes; power supply units; electric cables for use in music or sound recording or production; musical sound recordings; blank audio and video discs, cassettes, compact discs, cartridges, tapes, DVDs, CD ROMs and video recordings; pre-recorded audio and video discs, cassettes, compact discs, cartridges, tapes, DVDs, CD ROMs and video recordings featuring music; downloadable electronic publications, namely books, magazines and manuals featuring music or music instruction recorded on computer media; downloadable prerecorded digital files containing music