Rock or Pop is a GENRE of popular music that originated in the 1950s. It is characterized by a heavy use of electric guitars, drums, and keyboards. Rock or Pop is often seen as a catch-all term for a variety of styles, including rock, pop, hip-hop, and electronic music. It has been a major influence on many genres of music, and continues to be popular today. The term 'Rock or Pop' is often used to describe a wide range of musical styles, from classic rock to modern pop.