- rock 'n' roll, rock'n'roll, rock-and-roll, rock and roll, rock, rock music - a genre of popular music originating in the 1950s; a blend of Black rhythm-and-blues with White country-and-western; "rock is a generic term for the range of styles that evolved out of rock'n'roll."
--1 is a kind of popular music, popular music genre
--1 has parts: backbeat
--1 has particulars:heavy metal; progressive rock, art rock; psychedelic rock, acid rock; punk rock, punk