Why is Louis Armstrong one of the most cherished and popular jazz musicians of all time? What were some of his accomplishments that contributed to his legacy?

Louis Armstrong popularized Jazz music as a genre and is also called the king of jazz. He made many well known songs like Hello Dolly. He was also the first African American to have featured billing in a Hollywood show. Louis also talked about the little rock crisis and said it wasn't handled in the way it should have been.    

no one cares about you you tube channel, this place if for learning.

including the octave, the answer would 8 notes in a major scale with one note being played twice. ex) c major scale includes: c, d, e, f, g, a, b, c

notice that c is played twice

however, if you were to ask me how many different notes are in a major scale- the answer would be 7.