Louis Armstrong and his Contributions
Louis Armstrong affected the world in many ways. One way he affected the world was with scat. Scat is an improvised style of jazz also when you sing using the voice in imitation of an instrument. When you sing scat you don't use any words. Armstrong is best know for being the most famous jazz trumpeter of the 20th century. If Louis Armstrong was never born it would have affected many artists back in the day because scat was a big style of music.
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Louis Armstrong - When You're Smiling