what style of music was a jazz-precursor and found its root in only three chords that were spread out over twelve measures?
Jazz bands increased greatly, and because they were frequently moving from place to place, the piano did not enter the composition of these bands until about 1920. Since the beginning of the twentieth century, jazz has progressed stumbling forward. At first, some whites tried to form their own bands to play jazz music that they wrote down with notes, but they did not succeed, because the blatant Negro spirit that was the dominant character on jazz music at the time was lacking. But white musicians did not lose hope and then worked to develop a new type of jazz called Dixieland, which gradually spread throughout the United States of America thanks to films and record companies until the outbreak of World War II. At this time and during the First World War, the leadership of jazz musicians moved from New Orleans to Chicago, which contained more cabarets, bars, and nightclubs. It includes players from the city of New Orleans, which was considered the institute that produced the most famous and most skilled players in improvisation.