用英语介绍摇滚乐~

Rock music is a form of popular music with a prominent vocal melody accompanied by guitar, drums, and 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 often revolves around guitar, either electric or acoustic.

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, blues to create blues rock and with jazz, to create jazz-rock fusion, and without a time signature to create psychedelic rock. In the 1970s, rock incorporated influences from soul, funk, and latin music. Also in the 1970s, rock developed a number of subgenres, such as soft rock, hard rock, progressive rock, heavy metal and punk rock. Rock subgenres from the 1980s included glam metal, synth-rock, thrash metal, hardcore punk and alternative rock. In the 1990s, rock subgenres included grunge-style rock, britpop, indie rock, piano rock, and nu metal.

http://en.wikipedia.org/wiki/Rock_music

Rock 'N Roll" is a type of music. It "shook things up" in the 1950s and 1960s. Many musical styles from around the world contributed to this new sound. Along with the African American influence, rock 'n roll also drew on the lyrical melodies of recent European immigrants and the country and western music of Texans.

First, the music became popular in small clubs and on the radio. Later, with the introduction of programs such as American Bandstand, teenagers could watch their favorite bands on television. Not everyone was excited about this music. Many parents didn't like the suggestive dancing, naughty lyrics, and loud, fast beat.

Harder - "Rock 'N Roll" is a musical genre whose 'golden age' is usually recognized as the decades of the 1950's and 1960's. This musical form had its beginnings in the blues tunes, gospel music, and jazz-influenced vocal music that became popular among African-American audiences after World War II. A new kind of blues, it featured electrically amplified guitars, harmonicas, and drummers that emphasized afterbeats. At the same time, black gospel music grew in popularity. These forms of black popular music were given the label rhythm and blues (R and B) and were played on big-city radio stations. Radio spread this music's appeal from black communities to towns throughout all of the United States. By the mid-1950's such performers as Little Richard, Joe Turner, and Chuck Berry were becoming popular with white audiences. Radio disc jockeys began calling their music rock 'n roll.