The rock'n'roll musical genre has emerged around 1950 in the United States. The rock looks like a mixture of jazz, blues and country music, but also bluegrass and folk influences or European should not be overlooked. Since then, the rock has evolved and is now a style of music powerful and very varied.
Rocking (rock, rock), the jargon of black gospel singers in the southern United States, originally referred to a state of spiritual ecstasy, but thereafter, during the 1940s, the term became double sense, the most obvious being the movement of dance, the underlying sexual being.
The rock'n'roll known since 1955 the U.S. a great success. Several American artists are Bill Haley: Elvis Presley or "The King" (the "king" of rock 'n' roll), Buddy Holly, Jerry Lee Lewis, Eddie Cochran, Chuck Berry, Bo Diddley, Little Richard and others . The precursors were the overwhelming majority of black musicians, tend to jazzy: Louis Jordan, Big Joe Turner, but Louis Armstrong, Duke Ellington, Sidney Bechet, and many others, forgotten, ignored, minimized.
The rock is linked to the advent of television, recording microsillon 33 and 45 rpm, the drive for all of the U.S. economic boom (related to energy deployed during the war, but it is a another story [1]), and the invention of the electric guitar, Fender in mind.
But in the late 1950s, rock'n'roll lost its popularity and vitality: the biggest of the day "disappear", as Elvis Presley, the King, who participated in military service in 1958, Germany and hangs up the stage to sign with Hollywood achieving 33 films, quality much discussed, only to come back in 1968, the lackluster Pat Boone will take its place in the charts.
Yet, far from the United States, is preparing to take over. The revolt of young Europeans, particularly young Britons, and Germans and French, will use the rock. This revolt against an established order that they will reject the rock'n'roll, but will use it until today.