Rock is a broad genre of popular music that originated as "rock and roll" in the United States in the late 1940s and early 1950s, developing into a range of different styles from the mid-1960s, particularly in the United States and the United Kingdom. It has its roots in 1940s and 1950s rock and roll, a style that drew directly from the blues and rhythm and blues genres of African-American music and from country music. Rock also drew strongly from genres such as electric blues and folk, and incorporated influences from jazz and other musical styles. For instrumentation, rock has centered on the electric guitar, usually as part of a rock group with electric bass guitar, drums, and one or more singers. Usually, rock is song-based music with a ⁴
₄ time signature using a verse–chorus form, but the genre has become extremely diverse. Like pop music, lyrics often stress romantic love but also address a wide variety of other themes that are frequently social or political. Rock was the most popular genre of music in the U.S. and much of the Western world from the 1950s to the 2010s.

1950 കളോടെ പടിഞ്ഞാറൻ സംഗീതത്തിന്റെ മുൻപന്തിയിലേക്ക് വന്ന സംഗീതവിഭാഗമാണ് റോക്ക്. റോക്ക് ആൻഡ്‌ റോൾ, റിതം ആൻഡ്‌ ബ്ലുസ്, കണ്ട്രി മ്യൂസിക്‌, ഫോക്, ജാസ് എന്നിവയിൽ നിന്നും ഉടലെടുത്തതാണീ സംഗീതരൂപം. ഗിറ്റാറിനെ കേന്ദ്രമാക്കിയുള്ള ഈ സംഗീതത്തിൽ ഡ്രംസ്, ബേസ് ഗിറ്റാർ, ഓർഗൻ, എന്നിവയും പ്രധാന പങ്ക് വഹിക്കുന്നു.