Electric Blues to Rock & Roll

(Choose from either of the following two categories:)

Delta- and mid-western African American singer-guitarists that presage the Chicago Style:

And then comes Rock and Roll:

Elvis Presley’s Hound Dog (1956)
Chuck Berry’s Too Much Monkey Business (1957)

*Recording dates of Chicago Blues artists do not normally reflect their earliest point of influence on popular artists, since record-industry interest in these musicians did not expand until after the era of Rock & Roll, at which time they had been privately influential to rock and roll musicians for more than a decade. The Muddy Waters and Howlin’ Wolf songs on this list were especially influential (as live performances) to Chuck Berry and other rock & roll artists and producers.