Chess Records royalty: Howlin' Wolf, Muddy Waters and Bo Diddley. Some of the core riffs created by them and others were the basis of a wide amount of Rock n' Roll. Many or their (and labelmate Chuck Berry's) songs were copied by many famous Rock n' Roll bands and artists such as The Beatles, The Rolling Stones, The Beach Boys and Eric Clapton.
Willie Dixon, a Chicago blues artist & songwriting legend. He wrote or co-wrote over 500 songs and his work has been recorded by some of the best-known blues musicians of his era, including Muddy Waters, Howlin' Wolf, Little Walter, and Buddy Guy.