Final answer:
Rock 'n' roll music in the 1960s, with iconic figures such as Bob Dylan and Elvis Presley, changed American society by blurring racial lines, promoting civil rights, and embodying the spirit of rebellion and counterculture.
Step-by-step explanation:
The kind of music that changed the fabric of American society in the 1960s was rock 'n' roll. This genre, which combined electric instruments with the sounds of gospel, blues, country, jazz, and R&B, was both a cultural and a social phenomenon that blurred racial lines and influenced social interactions among teenagers. Bob Dylan's songs like 'The Times They Are a-Changin'' and 'Masters of War' became anthems for the civil rights movement and the anti-war protest, contributing to the broader counterculture movement. Technology and economic demand led to the distribution of rock 'n' roll beyond its origins in African American communities, making artists like Elvis Presley household names and bringing issues of civil rights and rebellion to the forefront of American consciousness.