Mammy 1930 is an American PreCode musical drama film with Technicolor sequences, released by Warner Bros. The film starred Al Jolson and was a followup to his previous film, Say It With Songs 1929. Mammy became Al Jolsons fourth feature, following earlier screen efforts as The Jazz Singer 1927, The Singing Fool 1928 and Say It With Songs 1929. The movie relives Jolsons early years as a minstrel man. The songs were written by Irving Berlin, who is also credited with the original story titled Mr. Bones.
The original Technicolor sequences were found in a Dutch print a copy of the International Sound Version which had Dutch titles inserted in several places. This print was restored by the UCLA Film and Television Archive, and released on DVD from the Warner Archive Collection, along with its Overture and Exit Music. Unfortunately, sections of those Technicolor sequences were lost when Dutch titles were inserted, and some of the cuts from color to sepia tinted black and white are not smooth. Additionally, two songs are missing from all existing prints that were in the original release The Call of the South and Knights of the Road. They were written by Irving Berlin and sung by Al Jolson.
Source: Wikipedia