Mister Big is a 1943 musical directed by Charles Lamont, starring Donald O'Connor, Gloria Jean and Peggy Ryan. The film features the song "Rude, Crude, and Unattractive".[1]
This was the final of seven, successive B movie musicals that Universal Pictures cast with Donald O’Connor after he signed in 1941. When his popularity soared prior to release, the studio added $50,000 in musical numbers and distributed it as an A. His subsequent films were all A's.[2]