Al Jolson (1886-1950) was an American singer, comedian, and actor, often referred to as "The World's Greatest Entertainer." He is best known for his contributions to the genres of jazz, pop, and musical theatre, particularly during the early 20th century. Jolson's career took off with his performance in vaudeville and later on Broadway, where he starred in shows like "Sinbad" (1919) and "Bombo" (1921). One of his most notable works is the film "The Jazz Singer" (1927), which is historically significant as the first full-length "talkie" and helped to revolutionize the film industry. Jolson's rendition of songs such as "Swanee" and "My Mammy" became iconic, showcasing his powerful voice and emotive style. Jolson's impact on music is profound; he played a pivotal role in popularizing jazz and blending it with theatrical performance, influencing future generations of artists. His use of blackface and minstrelsy in performances has also sparked significant discussion and critique regarding race and representation in entertainment. Despite controversies, Jolson remains a key figure in the evolution of American popular music and entertainment.