Rock is a form of popular music with a prominent vocal melody accompanied by guitar, drums, and often bass. Many styles of rock music also use keyboard instruments such as organ, piano, or synthesizers. Rock music usually has a strong back beat, and usually revolves around the electric guitar.
Rock music has its roots in 1950s-era rock and roll and rockabilly. In the late 1960s, rock music was blended with folk music to create folk rock, and with jazz, to create jazz-rock fusion. In the 1970s, rock incorporated influences from soul, funk, and Latin music. In the 1970s, rock developed a number of subgenres, such as soft rock, blues rock, heavy metal-style rock, progressive rock, art rock, techno-rock, synth-rock and punk rock. Rock subgenres from the 1980s included hard rock, Indie-rock and alternative rock. In the 1990s, rock subgenres included grunge-style rock, Britpop, and Indie rock.
So a term like “Rock” is impossibly vague; it denotes, if anything, something historical rather than aesthetic.
Rock poetry means the rock lyrics, which is usually characterized by certain rhythm and countercultural ideas. Like other kinds of poetry it deals with poetic devices: