9 apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electrical controllers, electrical transformers; apparatus for recording, transmission, amplification, or reproduction of sound or images, namely, systems for musical live performances, loudspeakers; sound amplifiers for use with musical instruments, electro acoustic amplifiers; blank recordable DVDs; other data carriers; downloadable computer software for use in sound database management, system administration, for generating and processing sound signals, for converting analog and digital sound signals; data processing equipment, namely, data processors; computers;