Roots of Junior Wells

John Lee Curtis "Sonny Boy" Williamson was an American blues harmonica player and singer-songwriter. He is often regarded as the pioneer of the blues harp as a solo instrument. He played on hundreds of recordings by many pre–World War II blues artists. Under his own name, he was one of the most recorded blues musicians of the 1930s and 1940s and is closely associated with Chicago producer Lester Melrose and Bluebird Records. His popular songs, original or adapted, include "Good Morning, School Girl", "Sugar Mama", "Early in the Morning", and "Stop Breaking Down".

Delmark Records is an American jazz and blues independent record label. The label originated in 1953 in St. Louis, Missouri, as Delmar, when owner, and founder, Bob Koester released a recording of the Windy City Six, a traditional jazz group, under the Delmar imprint. Koester and the label moved to Chicago, Illinois, in 1958, and the label's name became Delmark. Koester sold the label assets in 2018, and the label since operates as Delmark Records LLC.