Hire of sound recording apparatus; hire of sound reproducing apparatus; instruction in the use of computers; production of sound recordings; rental of amplification and sound reinforcement equipment; rental of audio visual apparatus; rental of electrical apparatus for the recording of sound; rental of electrical apparatus for the reproduction of sound signals; rental of electrical apparatus for the storage of sound signals; rental of lighting apparatus for theatrical sets or television studios; rental of sound recording apparatus; rental of sound recordings; rental of stage lighting; rental of theatre lighting; sound recording services