Bill Robinson, nicknamed Bojangles (born Luther Robinson; May 25, 1878 – November 25, 1949), was an American tap dancer, actor, and singer, the best known and the most highly paid African-American entertainer in the United States during the first half of the 20th century.[1][2] His long career mirrored changes in American entertainment tastes and technology. His career began in the age of minstrel shows and moved to vaudeville, Broadway theatre, the recording industry, Hollywood films, radio, and television.

According to dance critic Marshall Stearns, "Robinson's contribution to tap dance is exact and specific. He brought it on its toes, dancing upright and swinging," adding a "hitherto-unknown lightness and presence."[3]: pp. 186–187  His signature routine was the stair dance, in which he would tap up and down a set of stairs in a rhythmically complex sequence of steps, a routine that he unsuccessfully attempted to patent. He is also credited with having popularized the word copacetic through his repeated use of it in vaudeville and radio appearances.

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.