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.

Armstrong was born and raised in New Orleans. Coming to prominence in the 1920s as an "inventive" trumpet and cornet player, Armstrong was a foundational influence in jazz, shifting the focus of the music from collective improvisation to solo performance. Around 1922, he followed his mentor, Joe "King" Oliver, to Chicago to play in the Creole Jazz Band. In the Windy City, he networked with other popular jazz musicians, reconnecting with his friend, Bix Beiderbecke, and made new contacts, which included Hoagy Carmichael and Lil Hardin. He earned a reputation at "cutting contests", and relocated to New York in order to join Fletcher Henderson's band.