Rock is a genre of popular music that originated in the 1950s. It is characterized by a strong rhythm, the use of electric guitars, bass guitar, drums, and often keyboards. Rock music has a wide range of styles and subgenres, including classic rock, punk rock, alternative rock, and more. It has been a dominant form of popular music for decades, influencing cultural and social movements and evolving with technological advancements. Known for its energetic performance and often rebellious lyrics, rock music has played a significant role in shaping modern music history.