Why were “Memphis Blues” and “St. Louis Blues” important songs in blues history?

"Memphis Blues" (1912) and "St. Louis Blues" (1914), both composed by W.C. Handy, were pivotal in the history of blues music because they helped formalize the genre and introduce it to a wider audience.12

Handy, a bandleader who integrated the blues idiom into popular music, used these compositions to establish the blues as a harmonic framework for improvisation. By drawing on African American folk melodies and incorporating the "blue" or slightly flattened seventh tone of the scale, he introduced a distinct melancholic element that became a hallmark of the genre.1

The success of these songs was instrumental in the development of the blues as a recognized musical form, leading to a surge in other popular songs labeled as "blues" during the Tin Pan Alley era. Ultimately, Handy's work helped bridge the transition from ragtime to jazz, cementing his legacy as a foundational figure in American music history.21