Louis Daniel Armstrong (August 4, 1901 – July 6, 1971), nicknamed "Satchmo", "Satch", and "Pops",[2] was an American trumpeter and vocalist. He was among the most influential figures in jazz. His career spanned five decades and several eras in the history of jazz.[3] He received numerous accolades including the Grammy Award for Best Male Vocal Performance for Hello, Dolly! in 1965, as well as a posthumous win for the Grammy Lifetime Achievement Award in 1972, and the induction into the National Rhythm & Blues Hall of Fame in 2017.[4]

With his instantly recognizable rich, gravelly voice, Armstrong was also an influential singer and skillful improviser, bending the lyrics and melody of a song. He was also skilled at scat singing. By the end of Armstrong's life, his influence had spread to popular music in general. Armstrong was one of the first popular African-American entertainers to "cross over" to wide popularity with white (and international) audiences. He rarely publicly politicized his race, to the dismay of fellow African Americans, but took a well-publicized stand for desegregation in the Little Rock crisis. He was able to access the upper echelons of American society at a time when this was difficult for black men.

from Wikipedia