Al Jolson passed away 75 years ago. He was known as The World's Greatest Entertainer for his music, Broadway shows, silent movies, and being in the first talkie. He was performing before microphones, and his voice could fill a hall, reaching all the way to the back rows. His most well known songs came from the acoustic recording era, and his career waned quickly when microphones came on the scene. Crooners took over the popular music scene, but he made a comeback in the Forties with electrical recordings. His final gig was in 1950 when he went to Korea to entertain troops. He died of a heart attack shortly after returning to the states.