Rock

Rock is a broad term that groups a variety of popular music genres originated as rock and roll in the early 1950s in the United States and evolved in a wide range of different styles in the 60s, particularly in the United Kingdom and the United States. United.1 2 It has its roots in the rock and roll of the 40s and 50s, coming from the combination of previous genres such as blues, rhythm and blues and country. Rock music was also strongly nourished by electric blues and folk, and incorporated influences from jazz, classical music and other sources. Rock has focused on the electric guitar, usually as part of a group consisting of singer, bass, drums and, sometimes, keyboard instruments such as the organ and piano. Rock usually focuses on songs, usually with a 4/4 beat and a verse-chorus structure, however the genre has become extremely diverse and common musical characteristics are difficult to define. Like pop music, the lyrics often focus on romantic love, but they also deal with a wide range of other topics with a frequent focus on the social and political.