Jazz owes a lot of its popularity to the phonograph, going back to the early days, when Thomas Edison invented the musical box that brought jazz to people who lived outside of the areas where jazz musicians played. Through phonograph records, they could hear the music of such people as "King" Joe Oliver. He was the first of the legendary great trumpet players to come out of New Orleans, the city where most experts in the field say that jazz originated. Jazz was played in the whorehouses in that city, and Louis Armstrong credits Oliver as being one person from whom he learned his style of playing trumpet.