Papa Jack Laine (1873-1966) was an influential American musician and bandleader, often referred to as the "Father of New Orleans Jazz." Primarily known for his work in the early 20th century, Laine played a pivotal role in the development of jazz in New Orleans, blending elements of brass band music, ragtime, and blues. Laine led the "Papa Jack Laine's Band," which featured a mix of black and white musicians, promoting racial integration in music during a time of segregation. His notable works include early recordings with his band, such as "The Old Rugged Cross" and "The Band Played On," which showcased the evolving sound of jazz. Laine's impact on music is significant; he mentored several key jazz figures, including Louis Armstrong and Sidney Bechet. His emphasis on improvisation and ensemble playing helped lay the groundwork for the New Orleans jazz style that would flourish in the 1920s and beyond. Laine's contributions to the genre were recognized posthumously, and he is remembered for his role in fostering a rich musical culture that continues to influence artists today.