It doesn't matter if it's traditional jazz, blues or rock 'n' roll.

FORBES: Magazine Article

He went through changes that ranged from imitating Nat Cole and Charles Brown to finding his own voice in jazz, gospel, rhythm and blues, rock 'n' roll, country, pop and soul.

WSJ: A Performance With Soul

The building was once Chess Records, the seminal electric blues label that paved the way for rock 'n' roll.

BBC: Chicago's jazz and blues shrines

Mr. MONROE: Are you familiar with the role the blues has played in the development of rock 'n' roll?

NPR: Young People and the Future of the Blues

How can one possibly claim to love rock 'n' roll, rap, country, without knowing and loving their mother, the blues?

NPR: Young People and the Future of the Blues

He didn't invent rock 'n' roll, but he helped, mingling in his music black rhythm- -and-blues, white country, gospel, everything.

CNN: How and why Elvis has changed us all