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| | NationMaster.com - Encyclopedia: Rock and Roll |
 | | Rock is a form of popular music, usually featuring vocals (often with vocal harmony), electric guitars, and a strong back beat; other instruments, such as the saxophone, are common in some styles, however saxophones have been omitted from newer subgenres of rock music since the 90s. |
 | | Rock is a form of popular music, usually featuring vocals (often with vocal harmony), electric guitars, a bass guitar, and a strong back beat; other instruments, such as the saxophone, trumpet, and trombone are common in some styles, however, horns have been omitted from newer subgenres of rock music since the 1990s. |
 | | Rock and roll was seen as commercial pop, but subverted the race barriers in the U.S., and with the British invasion the reverence of groups for fl Rhythm and blues stars brought these stars a wider public. |
| www.nationmaster.com /encyclopedia/Rock-and-Roll (8760 words) |
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