Disc jockey course

The discc jockey is a professional figure from the world of music and discography in general. After the end of the Second World War, electrically amplified machines were introduced which over time replaced acoustic devices such as gramophones, which amplified the reading of a groove engraved on a shellac disc, simply with the aid of a thromboidal bell that transmitted the vibrations of a diaphragm in contact with the stylus. This transformation led to a development of sound diffusion, and thanks to the amplifiers, the sound could be distributed through loudspeakers with electro-magnetic function capable of increasing the distribution power and could cover, acoustically speaking, larger rooms. The increasingly numerous holidays, thanks to this technology, without necessarily a band, especially in the United States, they had the function of socializing between individuals. However, the presence of a person suitable for musical selection became indispensable, as the duration of the discs was in any case limited, and if you wanted to maintain a temporal sequence by reducing interruptions, it was therefore important to have someone replace the supports, that is the disc. jockey. According to others, the birth of the DJ coincides with the first radio experiments, when the pioneers of radio broadcasting connected turntables to transmitters. Of course, a person was needed to select these discs, that is the DJ, with the opening of the disco and the export to America in the sixties, where the term DJ (disc jockey, literally "disc jockey"). The first mixing took place in a deconsecrated church in New York, frequented by homosexuals, where the Italian-American DJ Francis Grasso, modified some belt-driven Thorens cymbals, inserting the speed control. The first two discs mixed were a piece by Manu Dibango and one by Led Zeppelin.