Mary Lou Williams, a pioneering figure in jazz, was an American pianist and composer whose career spanned over five decades, from the late 1920s through the 1970s. Born in 1910, Williams was a child prodigy who grew into one of the most versatile and celebrated jazz musicians of her time. Her work reflected the evolution of American jazz, from its early roots to the bebop era. Williams was not only a virtuoso pianist but also an exceptional composer and arranger, breaking barriers in a male-dominated industry. After her conversion to Catholicism in 1957, she saw her musical talent as a divine gift, infusing her compositions with a spiritual depth that set her apart. Her legacy includes a vast body of work that continues to inspire, showcasing her innovative jazz pieces and sublime sacred music.