I believe the correct answer is: African American rhythm and blues.
The Rock ‘n’ Roll is a style in music which evolved in United States during the late 1940s and 1950s. The Rock ‘n' Roll of Elvis Presley, Jerry Lee Lewis, and the Rolling Stones was derived primarily from African American musical styles’ rhythm, such as gospel, jump blues, jazz, boogie woogie, blues.
R and B Rhythm and Blues, mostly found on Beale St where Elvis lived near and Jerry grew up.
