"No element of the South's culture has had more influence on the culture of the U.S. and other nations than its music. While the ballads and fiddle tunes brought by British settlers provided the foundation for what would become country music, the work songs and field hollers that were a vital part of the slaves' African heritage formed the basis of the blues. These musical forms did not always respect the South's racial divisions. There was more interaction than many realized as both the blues and country music grew more commercialized and, as members of both races left the farm in droves, more urbanized as well. When local radio stations and recording studios in cities like Memphis and New Orleans began to feature the work of both black and white performers after World War II, the closer contact and familiarity bred the revolutionary new sound that would become "rock 'n roll." Elvis Presley quickly won an enormous youthful following as a white singer who sounded "black," but if he succeeded by borrowing heavily from black stylings, he also helped to open the door to white audiences much wider for a host of black performers ranging from Little Richard to Chuck Berry."