Harry Lillis "Bing" Crosby Jr. (/ˈkrɒzbi/; May 3, 1903 – October 14, 1977) was an American singer and actor. The first multimedia star, Crosby was a leader in record sales, radio ratings, and motion picture grosses from 1931 to 1954. His early career coincided with recording innovations such as the microphone. This allowed him to develop an intimate singing style that influenced many male singers who followed him, including Perry Como, Frank Sinatra, Dick Haymes, and Dean Martin. Yank magazine said that he was the person who had done the most for American soldiers' morale during World War II. In 1948, American polls declared him the "most admired man alive", ahead of Jackie Robinson and Pope Pius XII. Also in 1948, Music Digest estimated that his recordings filled more than half of the 80,000 weekly hours allocated to recorded radio music.

Leonard Bernstein (/ˈbɜːrnstaɪn/ BURN-styne; August 25, 1918 – October 14, 1990) was an American composer, conductor, author, music lecturer, and pianist. He was among the first conductors born and educated in the US to receive worldwide acclaim. According to music critic Donal Henahan, he was "one of the most prodigiously talented and successful musicians in American history."