Because the Hays Code had taken effect in the years since this project was first suggested to MGM, the show's "racy" content (the idea of an angel having sex with a mortal) had to be considerably toned down for the film.
"Did You Ever Get Stung?" -- a Rodgers and Hart song featured in the 1938-39 Broadway show and performed by Dennis King, Vivienne Segal and Charles Walters -- was revised and retitled "Little Work-a-Day World" for the movie by Bob Wright and Chet Forrest. Ultimately, this number would be cut from the release print. The discarded ditty was among four film songs which Nelson Eddy recorded for the Columbia label on February 1, 1942. (The other cuts were "I Married an Angel," "Spring Is Here" and "I'll Tell the Man in the Street.") The Richard Rodgers tune of another song from the Broadway version of the musical, "At the Roxy Music Hall," was used in the film and retitled "Tira Lira La" with completely new lyrics by Bob Wright and Chet Forrest to replace those of Lorenz Hart.
According to an article in the old "Silver Screen" magazine there were several sets of wings made for this picture. One set, the ones Jeanette MacDonald wore when she first appeared as an angel were articulated so that they would fold. They cost the, then, astronomical price of $15,000 (about $100,000 in today's dollars). The others were simpler and cost about $4000 apiece. Jeanette complained about them saying that they were heavy and very uncomfortable to wear.