History
Rock music is a broad genre with many influences, one of which is from African-American rhythm and blues music in the late 1940's and 50's.
Music from artists such as Chuck Berry and Little Richard used the structures of classic blues which was then adapted to include a looser drum beat and faster guitar sounds that people could dance to. From this rock as a genre, became the foundation of numerous subgenres that all had attitude and style, and did things slightly differently, to appeal to their own audience. Alt rock, punk, and various metal genres have all stemmed from rock. This sound soon became the backbone of rock ‘n’ roll and the future of the genre. By the 1960’s, all differing and emerging variations of rock ‘n’ roll had started to slow down - it was also at this time that the genre underwent a rebrand to just be called ‘Rock’.
From this rock, as a genre, became the foundation of numerous subgenres that all had attitudes and styles which meant that they all did things slightly differently, to appeal to their own audience. Alt rock, punk, and various metal genres have all stemmed from rock as the genre continues to grow into the 21st century.