Louis Daniel Armstrong (August 4, 1901 – July 6, 1971), nicknamed Satchmo, Satch, and Pops, was an American trumpeter, composer, vocalist and occasional actor who was one of the most influential figures in jazz. His career spanned five decades, from the 1920s to the 1960s, and different eras in the history of jazz. In 2017, he was inducted into the Rhythm & Blues Hall of Fame.

With his instantly recognizable rich, gravelly voice, Armstrong was also an influential singer, demonstrating great dexterity as an improviser, bending the lyrics and melody of a song for expressive purposes. He was also very skilled at scat singing. Armstrong is renowned for his charismatic stage presence and voice almost as much as for his trumpet playing. Armstrong's influence extends well beyond jazz, and by the end of his career in the 1960s, he was widely regarded as a profound influence on popular music in general.

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