Bill Robinson
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.
from Wikipedia
Bill Robinson