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Rock is a form of popular music that emerged in the 1950s and that by the end of the 20th century was the world''s dominant form of popular music. It originated in the United States and spread to other
Rock and roll, style of popular music that originated in the United States in the mid-1950s and that evolved by the mid-1960s into the more encompassing international style known as rock music,
Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is composed and typically form
Rock became the most inclusive of musical genres; if other kinds of music—e.g., classical, jazz, easy listening, country, folk, etc.—are marketed as minority interests, rock defines the musical
Rock music is a form of popular music that emerged in the 1950s and can be defined as “a form of music with a strong beat”—it is difficult to be much more precise. It is also called rock and roll. Rock
Rock Island, city, seat (1833) of Rock Island county, northwestern Illinois, U.S. It lies on the Mississippi River (bridged to Iowa) at the mouth of the Rock River and opposite the island for which it was