Francis Albert Sinatra (/sɪˈnɑːtrə/; December 12, 1915 – May 14, 1998) was an American singer and actor. Nicknamed the "Chairman of the Board" and later called "Ol' Blue Eyes," he is regarded as one of the most popular entertainers of the mid-20th century. Sinatra is among the world's best-selling music artists, with an estimated 150 million record sales globally.

After beginning on the Major Bowes Amateur Hour radio show with the Hoboken Four in 1935, and later WNEW and WAAT in Jersey City, Sinatra became the star of radio shows of his own on NBC and CBS from the early 1940s to the mid-1950s. In 1942, Sinatra hired arranger Axel Stordahl away from Tommy Dorsey before he began his first radio program that year, keeping Stordahl with him for all of his radio work. By the end of 1942, he was named the "Most Popular Male Vocalist on Radio" in a DownBeat poll. Early on he frequently worked with The Andrews Sisters on radio. They would appear as guests on each other's shows, as well as on many USO shows broadcast to troops via the Armed Forces Radio Service (AFRS). He appeared as a special guest in the sisters' ABC Eight-to-the-Bar Ranch series, while the trio in turn guested on his Songs by Sinatra series on CBS. Sinatra had two stints as a regular member of the cast of Your Hit Parade;[ae] his first was from 1943 to 1945, and second was from 1946 to May 28, 1949, during which he was paired with the then-new girl singer, Doris Day. Starting in September 1949, the BBD&O advertising agency produced a radio series starring Sinatra for Lucky Strike called Light Up Time – some 176 15-minute shows that featured him and Dorothy Kirsten singing – which lasted through to May 1950.