Al Rinker (December 20, 1907 – June 11, 1982) began performing as a partner with Bing Crosby in 1925 and the two singers formed the Rhythm Boys, which singer/songwriter/pianist Harry Barris later joined. Barris wrote the songs Mississippi Mud, I Surrender, Dear, and Wrap Your Troubles in Dreams among others. The singing trio worked with Paul Whiteman's Big Band in Los Angeles until Crosby dissolved the group to go solo, recording both with Whiteman and on their own with Barris on piano.

The Rhythm Boys were filmed for the Paul Whiteman movie The King of Jazz (1930) singing Mississippi Mud, So the Bluebirds and the Blackbirds Got Together, I'm a Fisherman, Bench in the Park, and Happy Feet. According to a filmed interview of Rinker, Crosby performed the first two weeks on his first film while on daytime work release from jail after crashing his car into a telephone pole while driving drunk. After the Rhythm Boys broke up, they reunited only once, to appear together on the "Paul Whiteman Presents" radio broadcast on July 4, 1943.

Harry Lillis "Bing" Crosby (May 3, 1903 – October 14, 1977) was an American singer and actor. Crosby's trademark bass-baritone voice made him one of the best-selling recording artistes of the 20th century, with over half a billion records in circulation.

A multimedia star, from 1934 to 1954 Bing Crosby was a leader in record sales, radio ratings and motion picture grosses. His early career coincided with technical recording innovations; this allowed him to develop a laid-back, intimate singing style that influenced many of the popular male singers who followed him, including Perry Como,Frank Sinatra, and Dean Martin. Yank magazine recognized Crosby as the person who had done the most for American G.I. morale during World War II and, during his peak years, around 1948, polls declared him the "most admired man alive," ahead of Jackie Robinson and Pope Pius XII. Also in 1948, the Music Digest estimated that Crosby recordings filled more than half of the 80,000 weekly hours allocated to recorded radio music.

Edward Kennedy "Duke" Ellington (April 29, 1899 – May 24, 1974) was an American composer, pianist, and big-band leader. Ellington wrote over 1,000 compositions. In the opinion of Bob Blumenthal of The Boston Globe "In the century since his birth, there has been no greater composer, American or otherwise, than Edward Kennedy Ellington." A major figure in the history of jazz, Ellington's music stretched into various other genres, including blues, gospel, film scores, popular, and classical. His career spanned more than 50 years and included leading his orchestra, composing an inexhaustible songbook, scoring for movies, composing stage musicals, and world tours. Several of his instrumental works were adapted into songs that became standards. Due to his inventive use of the orchestra, or big band, and thanks to his eloquence and extraordinary charisma, he is generally considered to have elevated the perception of jazz to an art form on a par with other traditional genres of music. His reputation increased after his death and the Pulitzer Prize Board bestowed on him a special posthumous honor in 1999.