Carmichael wrote the melody, based on a Bix Beiderbecke cornet improvisation, as "Bix Licks", for a project to turn the novel Young Man With a Horn into a Broadway musical. After that project failed, Carmichael brought in Johnny Mercer to write lyrics for the song.[2] Mercer said that he struggled for a year after he got the music from Carmichael before he could get the lyrics right.[3] Mercer recalled that Carmichael initially called him several times about the lyrics but had forgotten about the song by the time Mercer finally wrote them.[4] The yearning expressed in the lyrics was based on Mercer's longing for Judy Garland, with whom he had an affair.[5]
^Wilder, Alec (1990). American Popular Song: The Great Innovators, 1900–1950. Oxford, New York: Oxford University Press.
^Dennis Adler (2004), Fifties Flashback: The American Car, MBI Publishing Company LLC, p. 52, ISBN0760319278, The flighty name for Buick's dream car came from a song of the same name recorded in 1942 by Johnny Mercer
^ abcdefGioia, Ted (2012). The Jazz Standards: A Guide to the Repertoire. New York City: Oxford University Press. p. 368. ISBN978-0-19-993739-4.