For the song "Pig Foot Pete".
This nomination is a mystery. Both the nominations list and the
program from the Awards dinner list the song as being from
'Hellzapoppin',' a 1942 release for Awards purposes. The song does not
appear in that film, but did appear in
Keep 'Em Flying (1941), a
1941 release from the same production company and studio, and was therefore
ineligible for a 1942 nomination. (from the AMPAS awards database)